Download Mitsubishi Electric KA12 Service manual
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS August 2013 No. OC320 REVISED EDITION-G TECHNICAL & SERVICE MANUAL Indoor unit [Model Name] Revision: • Added connectable outdoor unit SUZ-KA25/35/50VA4.TH in REVISED EDITION-G. • Some descriptions have been modified. [Service Ref.] SLZ-KA25VA.TH SLZ-KA25VA1.TH SLZ-KA25VAR2.TH SLZ-KA35VA.TH SLZ-KA35VA1.TH SLZ-KA35VAR2.TH SLZ-KA50VA.TH SLZ-KA50VA1.TH SLZ-KA50VAR2.TH SLZ-KA25VAL.TH SLZ-KA25VAL1.TH SLZ-KA25VALR2.TH SLZ-KA25VAL2.TH SLZ-KA35VAL.TH SLZ-KA35VAL1.TH SLZ-KA35VALR2.TH SLZ-KA35VALR3.TH SLZ-KA50VAL.TH SLZ-KA50VAL1.TH SLZ-KA50VALR2.TH SLZ-KA50VALR3.TH SLZ-KA25VA SLZ-KA35VA SLZ-KA50VA SLZ-KA25VAL SLZ-KA25VAL2 SLZ-KA35VAL SLZ-KA50VAL • Please void OC320 REVISED EDITION-F. Note: • This manual describes only service data of the indoor units. When servicing outdoor units, please refer to the outdoor unit's service manual. • RoHS compliant products have <G> mark on the spec name plate. • For servicing RoHS compliant products, refer to the RoHS Parts List. CONTENTS Model name indication ON/OFF AUTO COOL HEAT DRY TOO WARM TOO COOL FAN SELECT VANE TIME INDOOR UNIT TEMP. ON/OFF MODE RESET SLZ-KA25/35/50VAL.TH SLZ-KA25/35/50VAL1.TH SLZ-KA25/35/50VALR2.TH SLZ-KA25VAL2.TH SLZ-KA35/50VALR3.TH SLZ-KA25/35/50VA.TH SLZ-KA25/35/50VA1.TH SLZ-KA25/35/50VAR2.TH REMOTE CONTROLLER 1. TECHNICAL CHANGES ...................... 2 2. REFERENCE MANUAL ...................... 2 3. PARTS NAMES AND FUNCTIONS..... 3 4. SPECIFICATIONS ............................... 6 5. OUTLINES AND DIMENSIONS........... 8 6. WIRING DIAGRAM ............................ 11 7. REFRIGERANT SYSTEM DIAGRAM ..... 12 8. TROUBLESHOOTING ....................... 13 9. 4-WAY AIR FLOW SYSTEM.............. 27 10. DISASSEMBLY PROCEDURE .......... 29 11. PARTS LIST....................................... 32 12. RoHS PARTS LIST............................ 36 Use the specified refrigerant only Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions. 1 TECHNICAL CHANGES SLZ-KA35VALR2.TH SLZ-KA50VALR2.TH SLZ-KA35VALR3.TH SLZ-KA50VALR3.TH • INDOOR CONTROLLER BOARD has been changed. SLZ-KA25VAL1.TH SLZ-KA35VAL1.TH SLZ-KA50VAL1.TH SLZ-KA25VA1.TH SLZ-KA35VA1.TH SLZ-KA50VA1.TH SLZ-KA25VALR2.TH SLZ-KA35VALR2.TH SLZ-KA50VALR2.TH SLZ-KA25VAR2.TH SLZ-KA35VAR2.TH SLZ-KA50VAR2.TH • TURBO FAN and WASHER have been changed. SLZ-KA25VAL.TH SLZ-KA35VAL.TH SLZ-KA50VAL.TH SLZ-KA25VA.TH SLZ-KA35VA.TH SLZ-KA50VA.TH SLZ-KA25VAL1.TH SLZ-KA35VAL1.TH SLZ-KA50VAL1.TH SLZ-KA25VA1.TH SLZ-KA35VA1.TH SLZ-KA50VA1.TH • PANEL has been changed. SLP-2AL → SLP-2ALW SLP-2AA → SLP-2AAW (White: 0.70Y 8.59/0.97) → (Pure white: 6.4Y 8.9/0.4) 2 REFERENCE MANUAL 2-1. OUTDOOR UNIT’S SERVICE MANUAL Service Ref. Service Manual No. SUZ-KA25/50VA3.TH-A OCH511/OCB511 SUZ-KA25/35/50VA2.TH OCH472/OCB472 SUZ-KA25/35/50VA2.TH-A SUZ-KA25/35VA(R1).TH SUZ-KA25/35VAH(R1).TH SUZ-KA35/50VA(1).TH SUZ-KA35/50VAR2.TH OCH473/OCB473 OC322 SUZ-KA25/35VA(R1).TH-A SUZ-KA35/50VA(1).TH-A SUZ-KA35/50VAR2.TH-A OC323 SUZ-KA25/35/50VA3.TH OCH530/OCB530 SUZ-KA25/35/50VA4.TH OCH545/OCB545 2-2. TECHNICAL DATA BOOK Series (Outdoor unit) Data Book No. SUZ-KA • VA SUZ-KA • VAH OCS03 SUZ-KA • VA2 OCS20 SUZ-KA • VA3 OCS22/OCS25 SUZ-KA • VA4 OCS26 OC320G 2 3 PARTS NAMES AND FUNCTIONS SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH Filter Removes dust and pollutants from drawn in air. Indoor Unit Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Air Intake Draws in air from room. Wireless remote controller TEMPERATURE SETTING button h ON/OFF TOO WARM TOO COOL FAN SELECT To set any desired room temperature. ON / OFF button To start and to stop operation. AUTO COOL HEAT DRY TIMER SELECT button VANE TIME MODE To set time to start or stop unit operation. FAN SPEED button MODE SELECT button To change the operation mode; Auto, Cooling , Heating and Drying . (SLZ) RESET To set fan speed to Low, Medium or High. VANE CONTROL button To change the airflow direction. Attention: • Avoid pushing buttons with fingernails and other sharp objects. Sharp objects may damage remote controller. OC320G 3 ● Wired remote controller Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button. SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH ON/OFF button Temperature setting buttons Down Fan Speed button Up Timer Menu button (Monitor/Set button) Filter button (<Enter> button) Mode button (Return button) TEMP. ON/OFF Set Time buttons Check button (Clear button) Back Ahead Timer On/Off button (Set Day button) Test Run button MENU BACK PAR-21MAA MONITOR/SET ON/OFF FILTER DAY CHECK TEST OPERATION CLOCK Airflow Up/Down button CLEAR Louver button ( Operation button) To return operation number Opening the cover Ventilation button ( Operation button) Built-in temperature sensor OC320G 4 To go to next operation number ● Wired remote controller * The functions which can be used are restricted according to the model. Display Section For purposes of this explanation, all parts of the display are shown. During actual operation, only the relevant items will be lit. Day-of-Week “Sensor” indication Shows the current day of the week. Displays when the remote controller sensor is used. Time/Timer Display Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, the time to be switched off is shown. “Locked” indicator Indicates that remote controller buttons have been locked. Identifies the current operation “Clean The Filter” indicator Shows the operating mode, etc. *Multilanguage display is available. To be displayed on when it is time to clean the filter. TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE “Centrally Controlled” indicator Indicates that operation from the remote controller has been prohibited by a master controller. FUNCTION FILTER °F°C °F°C WEEKLY SIMPLE AUTO OFF ONLY1Hr. Timer indicators The indicator comes on if the corresponding timer is set. Fan Speed indicator Shows the selected fan speed. “Timer is Off” indicator Indicates that the timer is off. Up/Down Air Direction indicator Shows the direction of the outcoming airflow. “One Hour Only” indicator Temperature Setting Shows the target temperature. OC320G Displays if the airflow is set to low or downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off in one hour, when the airflow direction also changes. 5 Room Temperature display Shows the room temperature. The room temperature display range is 8~39. The display blinks if the temperature is less than 8 or 39 or more. Louver display Indicates the action of the swing louver. Does not appear if the louver is not running. (Power On indicator) Indicates that the power is on. Ventilation indicator Appears when the unit is running in Ventilation mode. 4 SPECIFICATIONS SLZ-KA35VA(L).TH SLZ-KA50VA(L).TH SLZ-KA25VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1.TH SLZ-KA25VA(L)1.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L)R2.TH SLZ-KA50VA(L)R2.TH SLZ-KA25VA(L)R2.TH SLZ-KA35VALR3.TH SLZ-KA50VALR3.TH Indoor service ref. Function Power supply Fan motor Electrical data Capacity Air flow (High/Medium/Low) Power outlet Running current* Power input Rated frequency Dew prevention heater Power factor* Fan motor current* Model Winding resistance (at 26:) Special remarks Dimensions K /h A A W (kW) % A " Width Height Depth Weight Air direction Sound level(High/Medium/Low) Fan speed(High/Medium/Low) Fan speed regulator Thermistor TH1(at 25:) Thermistor TH2(at 25:) Thermistor TH5(at 25:) mm(in) mm(in) mm(in) kg dB(A) rpm k" k" k" Cooling Heating Single phase 230V, 50Hz 600/540/480 10 0.35 75 0.014 90 93 0.19 PK6V15-LD Cooling Heating Single phase 230V, 50Hz 660/540/480 10 0.40 85 0.014 94 94 0.26 PK6V20-LL Cooling Heating Single phase 230V, 50Hz 660/540/480 10 0.40 85 0.014 94 94 0.26 PK6V20-LL Cooling Heating Single phase 230V, 50Hz 660/540/480 20 0.65 85 0.014 97 97 0.27 PK6V20-LM WHT-BLK: 407 BLK-BLU: 86 BLU-YLW: 30 BRN-RED: 165 WHT-BLK: 393 BLK-BLU: 164 BLU-YLW: 47 BRN-RED: 319 WHT-BLK: 393 BLK-BLU: 164 BLU-YLW: 47 BRN-RED: 319 WHT-BLK: 325 BLK-BLU: 143 BLU-YLW: 47 BRN-RED: 309 UNIT: 570(22-7/16) UNIT: 208(8-3/16) UNIT: 570(22-7/16) UNIT: 16.5 4 4 37/31/28 38/33/29 650/530/480 690/570/510 3 3 10 10 10 10 10 10 PANEL: 650(25-9/16) PANEL: 20(13/16) PANEL: 650(25-9/16) PANEL: 3 4 38/33/29 690/570/510 3 10 10 10 4 39/34/30 710/590/530 3 10 10 10 NOTE : Test conditions are based on ISO 5151. Cooling : Indoor D.B. 27˚C W.B. 19˚C Outdoor D.B. 35˚C W.B. 24˚C Heating : Indoor D.B. 20˚C W.B. 15˚C Outdoor D.B. 7˚C W.B. 6˚C Refrigerant piping length (one way): 5m *Measured under rated operating frequency Specifications and rating conditions of main electric parts INDOOR UNIT Service ref. Item 1.5+ 440V (FUSE) 250V 6.3A Vane motor Terminal block (MV) OC320G SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH MSBPC20 12V 250" (TB) TO OUTDOOR UNIT: 3P TO WIRED REMOTE CONTROLLER: 2P (SLZ-KA25/35/50VA) Indoor fan motor thermal fuse Cord Heater SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH (C1) Indoor fan capacitor Fuse SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH 141:i3: (H2) 240V AC 15W 6 NOISE CRITERION CURVES <50Hz> SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH NOTCH SPL(dB) High 37 Medium 31 Low 28 LINE SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE 20 10 LINE 90 63 125 250 NC-20 500 1000 2000 4000 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar) OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar) 90 <50Hz> NOTCH SPL(dB) High 38 Medium 33 Low 29 80 70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 10 8000 NC-70 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE 63 BAND CENTER FREQUENCIES, Hz SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH 125 NC-20 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz <50Hz> NOTCH SPL(dB) High 39 Medium 34 Low 30 LINE OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar) 90 UNIT 80 CEILING 70 NC-70 60 NC-60 1.5m 50 NC-50 40 NC-40 MICROPHONE 30 NC-30 20 10 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE 63 125 NC-20 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound may be bigger than the indicated level in actual use due to surrounding echoes. The sound level can be higher by about 2 dB than the indicated level during cooling and heating operation. OC320G 7 W 100 118 W 73.4 Cut out hole Emergency operation switch(heating) Emergency operation switch(cooling) Receiver Refrigerent pipe (liquid) Refrigerent pipe (gas) 17 202 230 35 55 V/M V/M 377 Air intake hole Grille Terminal block (Case of Wired remote controller)Terminal block 650 301 Air outlet hole 15~37 199 352 335 576~620 Ceiling hole 570 530 Suspension bolt pitch V/M V/M Ceiling surface 15~37 Brand label Vane motor Air intake grille Auto vane Drain hole Grille W 12.7mm flared connection 1/2 inch W 9.52mm flared connection 3/8 inch W 6.35mm flared connection 1/4 inch SLZ-KA35VA(L) W 6.35mm flared connection 1/4 inch W 9.52mm flared connection 3/8 inch W 6.35mm flared connection 1/4 inch SLZ-KA25VA(L) SLZ-KA25VAL2 SLZ-KA50VA(L) Refrigerent pipe (gas) Models Refrigerent pipe (liquid) Wiring entry Suspension bolt M10 or 3/8 (procure locally) Drain pipe VP-25 connection (O.D. W 32) SLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA35VA(L)R2.TH SLZ-KA50VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VALR3.TH SLZ-KA50VALR3.TH DEFROST/STAND BY lamp Operation lamp (WIRELESS PANEL) Ceiling surface 25 66 121 3- W 2.8 hole Burring hole 93 650 Detail drawing of fresh air intake 12 0 15~37 576~620 Ceiling hole 15~37 Fresh air intake 420 Suspension bolt pitch 57 56 38~58 55 35 Suspension bolt lower edge 301 Air outlet hole 335 193 570 87 235 20 31 208 +5 27 0 8 377 Air intake hole 182 OC320G 0 12 48 5 OUTLINES AND DIMENSIONS Unit: mm Unit: mm WIRELESS REMOTE CONTROLLER 57 17.5 h 140 ON/OFF AUTO COOL HEAT DRY TOO WARM TOO COOL FAN SELECT VANE TIME MODE RESET OC320G Installation area • Area in which the remote controller is not exposed to direct sunlight • Area in which there is no heating source nearby • Area in which the remote controller is not exposed to cold (or hot) winds • Area in which the remote controller can be operated easily • Area in which the remote controller is beyond the reach of children Installation method Attach the remote controller holder to the desired location using 2 tapping screws. Insert the lower end of the controller into the holder. Wireless remote controller (Accessory) Wall Remote controller holder (Accessory) Fixing screw (Accessory) • The signal can travel up to approximately 7 meters (in a straight line) within 45 degrees to both right and left of the center line of the receiver. In addition, the signal may not be received if there is interference of light of fluorescent lights or strong sunlight. 9 Unit: mm WIRED REMOTE CONTROLLER 43.5 120 130 83.5 19 46 OC320G 10 6 WIRING DIAGRAM SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH TB4 S1 S2 S3 GRILLE MF MV 5 MV 5 W.B CNB BZ LED2 LED1 SKY BLU PINK GRY VLT BLU 9 YLW ORN RED BRN 1 3 ORN C1 P.B RED 9 8 7 6 5 4 3 2 1 1 3 5 7 9 WHT )$1 FAN 1 3 RED 1 'Â+($7(5 CNC 3 RED 1 (POWER %2$5' CNDK FUSE 3 BLU 1 'Â8Â0 CNP X1 ORN BLU 20 M 1~ RED BLU 5 7 6 3 2 1 3 ORN (POWER CND 1 X6 X5 X4 X7 2 12345 1 SW2 KA50 ON OFF 3 CN51 5 6 1 CN41 1 4 See fig:*1 1 GRN 9$1( CN6V 1 5 12345 9 CN90 :,5(/(66 WHT 1 9 12345 1 2 1 2 LED1 BLU WHT /,48,' 5(02&21 CN22 CN21 2 1 2 1 t° t° TH5 t° TH1 t° TH2 2 TB15 1 2 R.B TB6 1 2 ĺ [LEGEND] SYMBOL C1 DP DS H2 MF MV TB4 NAME &$3$&,725)$102725 DRAIN PUMP DRAIN SENSOR DEW PREVENTION HEATER )$102725:,7+7+(50$/)86( VANE MOTOR TERMINAL BLOCK ,1'225287'225&211(&7,1*/,1( TB15 TERMINAL BLOCK (REMOTE CONTROLLER TRANSMISSION LINE TH1 ROOM TEMP. THERMISTOR (0&Nȍ&Nȍ'(7(&7 TH2 PIPE TEMP. THERMISTOR/LIQUID &Nȍ&Nȍ'(7(&7 TH5 COND. / EVA. TEMP. THERMISTOR &Nȍ&Nȍ'(7(&7 OPTION PARTS WIRED REMOTE CONTROLLER BOARD R.B TERMINAL BLOCK (REMOTE CONTROLLER TB6 TRANSMISSION LINE * For details on how to operate self-diagnosis refer to the technical manuals etc. OC320G 2 11 CN2S :+7 BLK WHT *Case of wired model NOTES:1. 6LQFHWKHRXWGRRUVLGHHOHFWULFZLULQJPD\FKDQJHEHVXUHWRFKHFNWKH outdoor unit electric wiring for servicing. 2. ,QGRRUDQGRXWGRRUFRQQHFWLQJZLUHVDUHPDGHZLWKSR,DULWLHVPDNHZLULQJ matching terminal numbers (666 3. 6\PER,VXVHGLQZLULQJGLDJUDPDERYHDUH:&RQQHFWRU:Terminal (block NAME INDOOR POWER BOARD INDOOR CONTROLLER BOARD &211(&725/2661$< &211(&7255(027(6:,7&+ &211(&725+$7(50,1$/$ CENTRALLY CONTROL )86(7$/9 32:(56833/<,% 32:(56833/<,% 75$160,66,21,1'225287'225 6:,7&+&$3$&,7<&2'( 6:,7&+02'(6(/(&7,21 6:,7&+(0(5*(1&<23(5$7,21 DRAIN PUMP/DEW PREVENTION HEATER 5(/$<)$102725// 5(/$<)$102725/R 5(/$<)$102725+L 5(/$<)$1027250H WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT BUZZER /('581,1',&$725 /('+27$'-867 6:,7&++($7,1*212)) 6:,7&+&22/,1*212)) RED BLK 3+$6( ,17$.( CN20 CN29 1 DS *Case of wireless model 12345 The black square(Ŷindicates a switch position.<*1> SYMBOL P.B I.B CN2L CN32 CN41 CN51 FUSE LED1 LED2 LED3 SW2 SW3 SWE X1 X4 X5 X6 X7 W.B RU BZ LED1 LED2 SW1 SW2 WHT '5$,1 CN31 3 ĺ KA35 CN105 5 CN32 ON OFF 1 LED2 1 2 BLU BLU OFF REMOTE CONTROLLER LED3 SKY BLU PINK GRY VLT BLU YLW ORN RED BRN RU KA25 3 DC13.1V WHT (POWER %2$5' CN2D RED ORN YLW WHT BLU SW3 SWE ON ON OFF OFF 12345 SW2 CN2L ON ON OFF 1 1 SW2 <fig:*1> MODELS I.B CNSK 5(' 3 BLU &21752/ CN3C SW1 W.R TO OUTDOOR UNIT M 1~ RED WHT MV RED ORN YLW WHT BLU DP YLW YLW 5 10 5 YLW YLW MV YLW YLW BLK YLW BRN WHT BLU H2 7 REFRIGERANT SYSTEM DIAGRAM SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH Strainer #50 Heat exchanger Refrigerant GAS pipe connection (Flare) Condenser/evaporator temperature thermistor (TH5) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Pipe temperature thermistor/liquid (TH2) Room temperature thermistor (TH1) Distributor with strainer #50 OC320G Strainer #50 12 8 TROUBLESHOOTING 8-1. CAUTIONS ON TROUBLESHOOTING (1) Before troubleshooting, check the followings: Check the power supply voltage. Check that the indoor/outdoor connecting wire is correct. (2) Take care of the followings during servicing. Before servicing the air conditioner, be sure to turn off the remote controller first to stop the main unit, and then turn off the breaker. When removing the indoor controller board, hold the edge of the board with care NOT to apply stress on the components. When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires. Lead wire 8-2. SELF-CHECK Wireless remote controller h ON/OFF TOO WARM TOO COOL FAN SELECT VANE TIME AUTO COOL HEAT DRY MODE RESET [Procedure] Turn ON the power. While pressing both the MODE SELECT button and TOO COOL button on the remote controller at the same time, press the RESET button. Firstly, release the RESET button. And release the other 2 buttons since all LCD in operation display section of the remote controller is displayed after 3 seconds. Transmit the signal of remote controller, pressing ON/ OFF button on the remote controller. (The above procedure allows OPERATION INDICATOR lamp to indicate the failure-mode.) Transmit the signal of remote controller, pressing ON/ OFF button to stop the self-check. OPERATION INDICATER OC320G 13 Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds OPERATION INDICATOR lamp blink pattern Beep Beep Beep Beep Off Beep 1st 2 nd 3 rd nth On On On On Beep Beep 1st Off On 2 nd · · · Repeated On 0.5 sec. Approx. 2.5 sec. 0.5 sec. 0.5 sec. Self-check Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec. starts (Start signal Number of blinks/beeps in pattern indicates the check Number of blinks/beeps in pattern indicates received) code in the following table (i.e., n=5 for “P5”) the check code in the following table [Output pattern B] Beeper sounds OPERATION INDICATOR lamp blink pattern Beep Beep Beep Beep 1st Off On Approx. 3 sec. Self-check Approx. 2.5 sec. starts (Start signal received) 2nd Beep Beep nth 1st 3 rd On On On 0.5 sec. 0.5 sec. 0.5 sec. On Off 0.5 sec. Approx. 2.5 sec. Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n=5 for “U2”) On Approx. 3 sec. Beep 2 nd · · · Repeated On On 0.5 sec. 0.5 sec. Number of blinks/beeps in pattern indicates the check code in the following table [Output pattern A] Errors detected by indoor unit Wireless remote controller Wired remote controller Beeper sounds/OPERATION INDICATOR lamp blinks 1 Check code (Number of times) 1 P1 P2 2 P9 3 E6,E7 4 P4 5 P5 6 P6 7 EE 8 P8 9 E4, E5 – 10 – 11 12 Fb 14 PL E0, E3 – – E1, E2 Symptom Remarks Intake sensor error Pipe (TH2) sensor error Pipe (TH5) sensor error Indoor/outdoor unit communication error Drain sensor error Drain pump error Freezing/Overheating protection operation Communication error between indoor and outdoor units Pipe temperature error Remote controller signal receiving error – – Indoor unit control system error (memory error, etc.) Refrigerant circuit abnomal Remote controller transmission error Remote controller control board error [Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.) Wireless remote controller Wired remote controller Beeper sounds/OPERATION INDICATOR lamp blinks 1 Check code (Number of times) 1 E9 2 3 4 UP U3,U4 UF 5 U2 6 U1,Ud 7 8 9 10 U5 U8 U6 U7 11 U9,UH 12 13 14 – – Others Symptom Remarks Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit) Compressor overcurrent interruption Open/short of outdoor unit thermistors Compressor overcurrent interruption (When compressor locked) Abnormal high discharging temperature/49C operated/ insufficient refrigerant Abnormal high pressure (63H operated)/Overheating protection operation Abnormal temperature of heatsink Outdoor unit fan protection stop Compressor overcurrent interruption/Abnormal of power module Abnormality of superheat due to low discharge temperature Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error – – Other errors (Refer to the technical manual for the outdoor unit.) For details, check the LED display of the outdoor controller board. As for outdoor unit, refer to outdoor unit’s service manual. Notes: 1. If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records. 2. If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to confirm the self-check start signal was received, the specified refrigerant address is incorrect. OC320G 14 continued to the next page. • On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp • On wired remote controller Check code displayed on the LCD. • If the unit cannot be operated properly after the test run, refer to the following table to find out the cause. Symptom Wired remote controller PLEASE WAIT PLEASE WAIT → Error code Cause For about 2 minutes after power-on Subsequent to about 2 minutes after power-on No messages appear even when operation switch is turned ON (operation lamp does not light up). •For about 2 minutes after power-on,operation of the remote controller is not possible due to system start-up. (Correct operation) •Connector for the outdoor unit’s protection device is not connected. •Reverse or open phase wiring for the outdoor unit’s power terminal block •Incorrect wiring between indoor and outdoor units. (incorrect polarity of S1, S2, S3) •Remote controller wire short On the wireless remote controller with condition above, following phenomena take place. • No signals from the remote controller can be received. • Operation lamp is blinking. • The buzzer makes a short ping sound. Note: Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation) For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table. LED2 (power for remote controller) Indicates whether control power is supplied. Make sure that this LED is always lit. Indicates whether power is supplied to the remote controller. This LED lights only in the case of the indoor unit which is connected to the outdoor unit refrigerant address “0”. LED3 (communication between indoor and outdoor units) Indicates state of communication between the indoor and outdoor units. Make sure that this LED is always blinking. LED1 (power for microprocessor) OC320G 15 8-3. SELF-DIAGNOSIS ACTION TABLE Error Code Note: Refer to the manual of outdoor unit for the details of display such as F, U, and other E. Abnormal point and detection method Cause Room temperature thermistor (TH1) 1 Defective thermistor 1The unit is in 3-minute resume prevention characteristics mode if short/open of 2 Contact failure of connector thermistor is detected. Abnormal if the (CN20) on the indoor controller unit does not reset normally after 3 board (Insert failure) minutes. (The unit returns to normal Breaking of wire or contact operation, if it has been reset normally.) failure of thermistor wiring 2 Constantly detected during cooling, Defective indoor controller drying and heating operation board Short: -90˚C or more Open: -40˚C or less P1 Countermeasure Check resistance value of thermistor. 0˚C.....15.0kΩ 10˚C.......9.6kΩ 20˚C.......6.3kΩ 30˚C.......4.3kΩ 40˚C.......3.0kΩ If you put force on (draw or bend) the lead wire with measuring resistance value of thermistor, breaking of wire or contact failure can be detected. 2 Check contact failure of connector (CN20) on the indoor controller board. Refer to 8-5. Turn the power back on and check restart after inserting connector again. Check room temperature display on remote controller. Replace indoor controller board if there is abnormal difference with actual room temperature. 1~ Turn the power off, and on again to operate after checking. P2 Pipe temperature thermistor/Liquid (TH2) 1 The unit is in 3-minute resume prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.) 2 Constantly detected during cooling, drying, and heating (except defrosting) operation. Short: 90˚C or more Open: -40˚C or less ~ Check resistance value of thermistor. 1 Defective thermistor characteristics For characteristics, refer to (P1) above. 2 Contact failure of connector 2 Check contact failure of connector (CN21) (CN21) on the indoor controller on the indoor controller board. Refer to 8-5. board (Insert failure) Turn the power on and check restart after Breaking of wire or contact inserting connector again. failure of thermistor wiring Check pipe <liquid> temperature with Defective refrigerant circuit is remote controller in test run mode. If pipe causing thermistor temperature <liquid> temperature is extremely low (in of 90˚C or more or -40˚C or cooling mode) or high (in heating mode), less. refrigerant circuit may have defect. Defective indoor controller board Check pipe <liquid> temperature with remote controller in test run mode. If there is extreme difference with actual pipe <liquid> temperature, replace indoor controller board. Turn the power off, and on again to operate after checking. P4 P5 Drain sensor (DS) 1 Suspensive abnormality, if short/open of thermistor is detected for 30 seconds continuously. Turn off compressor and indoor fan. 2 Short/open is detected for 30 seconds continuously during suspensive abnormality. (The unit returns to normal operation, if it has been reset normally.) Detect the following condition. • During cooling and drying operation • In case that pipe <liquid> temperature room temperature <-10deg (Except defrosting) • When pipe <liquid> temperature or room temperature is short/open temperature. • During drain pump operation Malfunction of drain pump (DP) 1 Suspensive abnormality, if thermistor of drain sensor heats itself and temperature rises slightly. Turn off compressor and indoor fan. 2Drain pomp is abnormal if the condition above is detected during suspensive abnormality. Constantly detected during drain pump operation OC320G 1 Defective thermistor 1~3 Check resistance value of thermistor. characteristics 0˚C.....6.0kΩ 10˚C.......3.9kΩ 2 Contact failure of connector (CN31) on the indoor controller 20˚C.......2.6kΩ board (Insert failure) 30˚C.......1.8kΩ Breaking of wire or contact 40˚C.......1.3kΩ failure of drain sensor wiring 2 Check contact failure of connector (CN31) on the indoor controller board. Refer to 8-5. Defective indoor controller board Turn the power back on and check restart after inserting connector again. 4 Replace indoor controller board if drain pump operates with the line of drain sensor connector CN31-1 and 2 is short-circuited, and abnormality reappears. Turn the power off, and on again to operate after checking. 1 Malfunction of drain pump 2 Defective drain Clogged drain pump Clogged drain pipe Attached drop of water at the drain sensor • Drops of drain trickles from lead wire • Clogged filter is causing wave of drain. Defective indoor controller board 16 1 Check if drain pump operates. 2 Check drain function. 3 Check the setting of lead wire of drain sensor and check clogs of the filter. 4 Replace indoor controller board if drain pump operates with the line of drain sensor connector CN31-1 and 2 is short-circuited and abnormality reappears. Refer to 8-5. Turn the power off, and on again to operate after checking. Error Code Abnormal point and detection method Freezing/overheating protection is operating Freezing protection (Cooling mode) The unit is in 6-minute resume prevention mode if pipe <liquid or condenser/ evaporator> temperature stays under -15˚C for 3 minutes after the compressor started. Abnormal if it stays under -15˚C for 3 minutes again within 16 minutes after 6-minute resume prevention mode. Overheating protection (Heating mode) The units is in 6-minute resume prevention mode if pipe <condenser / evaporator> temperature is detected as over 70˚C after the compressor started. Abnormal if the temperature of over 70˚C is detected again within 10 minutes after 6-minute resume prevention mode. (Heating mode) (Heating mode) 1 Clogged filter (reduced airflow) 1 Check clogs of the filter. Short cycle of air path Remove blockage. Overload (high temperature) operation out of the tolerance range Defective indoor fan motor Measure the resistance of fan motor's • Fan motor is defective. winding. • Indoor controller board is Measure the output voltage of fan's connector defective. (FAN) on the indoor controller board. * The indoor controller board should be normal when voltage of AC 220~240V is detected while fan motor is connected. Refer to 8-5. Defective outdoor fan control Check outdoor fan motor. ~ Check operating condition of refrigerant Overcharge of refrigerant circuit. Defective refrigerant circuit (clogging) Bypass circuit of outdoor unit is defective. P6 P8 Countermeasure Cause (Cooling or drying mode) (Cooling or drying mode) 1 Clogged filter (reduced airflow) 1 Check clogging of the filter. Short cycle of air path Remove blockage. Low-load (low temperature) operation out of the tolerance range Defective indoor fan motor Measure the resistance of fan motor's winding. • Fan motor is defective. Measure the output voltage of fan's connector • Indoor controller board is (FAN) on the indoor controller board. defective. * The indoor controller board should be normal when voltage of AC 220~240V is detected while fan motor is connected. Refer to 8-5. Defective outdoor fan control Check outdoor fan motor. Check operating condition of refrigerant Overcharge of refrigerant circuit. Defective refrigerant circuit (clogging) Pipe temperature 1 Slight temperature difference <Cooling mode> between indoor room Detected as abnormal when the pipe temtemperature and pipe <liquid perature is not in the cooling range 3 minor condenser / evaporator> utes after compressor start and 6 minutes temperature thermistor after the liquid or condenser/evaporator pipe • Shortage of refrigerant is out of cooling range. • Disconnected holder of Note 1) It takes at least 9 min. to detect. pipe <liquid or condenser / Note 2) Abnormality P8 is not detected in evaporator> thermistor drying mode. • Defective refrigerant circuit Converse connection of Cooling range: -3 deg (TH-TH1) extension pipe (on plural units TH: Lower temperature between liquid pipe connection) temperature (TH2) and condenser/ Converse wiring of indoor/ evaporator temperature (TH5) outdoor unit connecting wire TH1: Intake temperature (on plural units connection) Defective detection of indoor <Heating mode> room temperature and pipe When 10 seconds have passed after the <condenser / evaporator> compressor starts operation and the hot temperature thermistor adjustment mode has finished, the unit is Stop valve is not opened detected as abnormal when condenser/ completely. evaporator pipe temperature is not in heating range within 20 minutes. Note 3) It takes at least 27 minutes to detect abnormality. Note 4) It excludes the period of defrosting (Detection restarts when defrosting mode is over) Heating range: 3 deg (TH5-TH1) OC320G 17 1~ ( Check pipe <liquid or condenser / evaporator> temperature with room temperature display on remote controller and outdoor controller circuit board. Pipe <liquid or condenser / evaporator> temperature display is indicated by setting SW2 of outdoor controller circuit board as follows. Conduct temperature check with outdoor controller circuit board after connecting ‘A-Control Service Tool (PAC-SK52ST)’. ) Check converse connection of extension pipe or converse wiring of indoor/outdoor unit connecting wire. Error Code P9 Countermeasure Abnormal point and detection method Cause Pipe temperature thermistor / Condenser / Evaporator (TH5) 1 Defective thermistor 1 The unit is in 3-minute resume protec1~ Check resistance value of thermistor. characteristics tion mode if short/open of thermistor is For characteristics, refer to (P1) above. detected. Abnormal if the unit does not 2 Contact failure of connector 2 Check contact failure of connector (CN29) (CN29) on the indoor controller get back to normal within 3 minutes. (The on the indoor controller board. board (Insert failure) unit returns to normal operation, if it has Refer to 8-5. Breaking of wire or contact been reset normally.) Turn the power on and check restart after failure of thermistor wiring 2 Constantly detected during cooling, inserting connector again. Temperature of thermistor is drying, and heating operation (except Operate in test run mode and check pipe 90°C or more or -40°C or less defrosting) <condenser/evaporator> temperature with Short: 90°C or more outdoor controller circuit board. If pipe caused by defective refrigerant <condenser/evaporator> temperature is circuit. Open: -40°C or less extremely low (in cooling mode) or high (in Defective indoor controller heating mode), refrigerant circuit may have board defect. Operate in test run mode and check pipe <condenser/evaporator> temperature with outdoor control circuit board. If there is extreme difference with actual pipe <condenser/evaporator> temperature replace indoor controller board. There is no abnormality if none of the above comes within the unit. Turn the power off and on again to operate. In case of checking pipe temperature with outdoor controller circuit board, be sure to connect A-control service tool (PAC-SK52ST). ( PL Abnormal refrigerant circuit During Cooling, Dry, or Auto Cooling operation, when the following are regarded as failures when detected for one second. a)The compressor continues to run for 30 or more seconds. b)The liquid pipe temperature or the condense/evaporator temperature is 75°C or more. *These detected errors will not be cancelled until the power source is reset. Remote controller transmission error(E0)/signal receiving error(E4) 1 Abnormal if main or sub remote controller cannot receive any transmission normally from indoor unit of refrigerant address “0” for 3 minutes. (Error code : E0) 2 Abnormal if sub-remote controller could not receive for any signal for 2 minutes. (Error code: E0) E0 or E4 1 Abnormal if indoor controller board cannot receive normally any data from remote controller board or from other indoor controller board for 3 minutes. (Error code: E4) 2 Indoor controller board cannot receive any signal from remote controller for 2 minutes. (Error code: E4) OC320G 1 Abnormal operation of 4-way valve 2 Disconnection of or leakage in refrigerant pipes Air into refrigerant piping Abnormal operation (no rotation) of indoor fan · Defective fan motor. · Defective indoor control board. Defective refrigerant circuit (clogging) 1 Contact failure at transmission wire of remote controller 2 All remote controllers are set as “sub” remote controller. In this case, E0 is displayed on remote controller, and E4 is displayed at LED (LED1, LED2) on the outdoor controller circuit board. Miswiring of remote controller Defective transmitting/receiving circuit of remote controller Defective transmitting/receiving circuit of indoor controller board of refrigerant address “0” Noise has entered into the transmission wire of remote controller. 18 ) 1 When this error occurs, be sure to replace the 4-way valve. 2 Check refrigerant pipes for disconnection or leakage. 3 After the recovery of refrigerant, vacuum dry the whole refrigerant circuit. 4 Refer to section 8-7. 5 Check refrigerant circuit for operation. *To avoid entry of moisture or air into refrigerant circuit which could cause abnormal high pressure, purge air in refrigerant circuit or replace refrigerant. 1 Check disconnection or looseness of indoor unit or transmission wire of remote controller. 2 Set one of the remote controllers “main”, if there is no problem with the action above. 3 Check wiring of remote controller. • Total wiring length: max. 500 m (Do not use cable × 3 or more) • The number of connecting indoor units: max. 16 units • The number of connecting remote controller: max. 2 units When the above-mentioned problem of 1~3are not seen. Diagnose remote controllers. a) When “RC OK” is displayed, remote controllers have no problem. Turn the power off, and on again to check. If abnormality generates again, replace indoor controller board. b) When “RC NG” is displayed, replace remote controller. c) When “RC E3” or “ERC 00-66” is displayed, noise may be causing abnormality. Abnormal point and detection method Error Code E3 or E5 Remote controller transmission error(E3)/signal receiving error(E5) 1 Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit. (Error code: E3) 2 Remote controller receives transmitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E3) E7 Fb (FB)* E1 or E2 Countermeasure 1 2 remote controllers are set as 1 Set a remote controller to main, and the other to sub. “main.” (In case of 2 remote controllers) 2 Remote controller is connected 2 Remote controller is connected with only one indoor unit. with 2 indoor units or more. 3 The address changes to a separate setting. Repetition of refrigerant address ~ Diagnose remote controller. Defective transmitting/receiving a) When “RC OK” is displayed, remote concircuit of remote controller trollers have no problem. 1 Abnormal if indoor controller board could Defective transmitting/receiving Turn the power off, and on again to check. not find blank of transmission path. circuit of indoor controller board When becoming abnormal again, replace (Error code: E5) Noise has entered into transmisindoor controller board. 2 Indoor controller board receives sion wire of remote controller. b) When “RC NG” is displayed, replace transmitted data at the same time, remote controller. compares the data, and when detecting c) When “RC E3” or “ERC 00-66” is displayed, it, judges different data to be abnormal noise may be causing abnormality. 30 continuous times. (Error code: E5) Indoor/outdoor unit communication error (Signal receiving error) 1 Abnormal if indoor controller board cannot receive any signal normally for 6 minutes after turning the power on. E6 Cause 2 Abnormal if indoor controller board cannot receive any signal normally for 3 minutes. Consider the unit abnormal under the following condition: When 2 or more indoor units are connected to one outdoor unit, indoor controller board cannot receive a signal for 3 minutes from outdoor controller circuit board, a signal which allows outdoor controller circuit board to transmit signals. 1 Contact failure, short circuit or, 1 Check disconnection or looseness of indoor/ outdoor unit connecting wire of indoor unit or miswiring (converse wiring) of outdoor unit. indoor/outdoor unit connecting Check all the units in case of twin indoor unit wire system. 2 Defective transmitting/receiving circuit of indoor controller 2~4Turn the power off, and on again to check. If abnormality generates again, board replace indoor controller board or outdoor Defective transmitting/receiving controller circuit board. circuit of indoor controller board * Other indoor controller board may have Noise has entered into indoor/ defect in case of twin indoor unit system. outdoor unit connecting wire. Indoor/outdoor unit communication 1 Defective transmitting receiving 1~3 Turn the power off, and on again to error (Transmitting error) check. If abnormality generates again, circuit of indoor controller board Abnormal if “1” receiving is detected 30 replace indoor controller board. 2 Noise has entered into power times continuously though indoor controller supply. board has transmitted “0”. 3 Noise has entered into outdoor control wire. Indoor controller board Abnormal if data cannot be normally read from the nonvolatile memory of the indoor controller board. 1 Defective indoor controller board Remote controller control board 1 Abnormal if data cannot be normally 1 Defective remote controller read from the nonvolatile memory of the remote controller control board. (Error code: E1) 2 Abnormal if the clock function of remote controller cannot be normally operated. (Error code: E2) OC320G 19 1 Replace indoor controller board. * The check code in the parenthesis indicates PAR-30MAA model. 1 Replace remote controller. Error Code PA (2502) (2500) Abnormal point and detection method Cause Countermeasure Forced compressor stop (due to water leakage abnormality) 1 When the intake temperature subtracted 1 Drain pump trouble 1 Check the drain pump. from liquid pipe temperature is less than -10°C, drain sensor detects whether it is 2 Drain defective 2 Please check whether water can be drained. soaked in the water or not at the interval · Drain pump clogging of 90 seconds. (Drain pump will start · Drain pipe clogging operating when the drain sensor detects to be soaked in the water.) Open circuit of drain sensor Check the resistance of the drain sensor side 2 The unit has a water leakage abnormality side heater heater. when the following conditions, a) and b), are satisfied while the above-mentioned Contact failure of drain sensor Check the connector contact failure. detection is performed. connector a) The drain sensor detects to be soaked in the water 10 times in a row. Dew condensation on drain Check the drain sensor lead wire mounted. b) The intake temperature subtracted sensor Check the filter clogging. from liquid pipe temperature is · Drain water trickles along lead detected to be less than -10°C for a wire. total of 30 minutes. · Drain water waving due to filter (When the drain sensor detects to clogging be NOT soaked in the water, the detection record of a) and b) will be Check the piping connection. Extension piping connection cleared.) difference at twin, triple, The drain sensor detection is performed quadruple system in operations other than cooling. (When the unit stops operating, during heat Miswiring of indoor/outdoor Check the indoor/outdoor connecting wires. ing or fan operation, when the unit stops connecting at twin, triple, because of some abnormality) quadruple system *Once the water leakage abnormality is detected, abnormality state will not be Room temperature thermistor/ Check the room temperature display of released until the main power is reset. liquid pipe temperature remote controller. themistor detection is defective. Check the indoor liquid pipe temperature display of outdoor controller board. OC320G 20 8-4. TROUBLESHOOTING OF PROBLEMS Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause (1) LED2 on indoor controller board • When LED1 on indoor controller board is also off. 1 Power supply of rated voltage is not supplied to outis off. door unit. 2 Defective outdoor controller circuit board Power supply of 220~240V is not supplied to indoor unit. Defective indoor power board Defective indoor controller board • When LED1 on indoor controller board is lit. 1 Mis-setting of refrigerant address for outdoor unit (There is no unit corresponding to refrigerant address “0”.) (2) LED2 on indoor controller board is blinking. OC320G Countermeasure 1 Check the voltage of outdoor power supply terminal block (L, N) or (L3, N). • When AC 220~240V is not detected, check the power wiring to outdoor unit and the breaker. • When AC 220~240V is detected, check 2 (below). 2 Check the voltage between outdoor terminal block S1 and S2. • When AC 220~240V is not detected, —check the fuse on outdoor controller circuit board. —check the wiring connection. • When AC 220~240V is detected, check (below). Check the voltage between indoor terminal block S1 and S2. • When AC 220~240V is not detected, check indoor/outdoor unit connecting wire for miswiring. • When AC 220~240V is detected, check (below). Check voltage output from CN2S on indoor power board (DC13.1V). Refer to 8-5. • When no voltage is output, check the wiring connection. • When output voltage is between DC12.5V and DC13.7V, check (below). Check the wiring connection between indoor controller board and indoor power board. Check the fuse on indoor controller board. If no problems are found, indoor controller board is defective. 1 Check the setting of refrigerant address for outdoor unit. Set the refrigerant address to “0”. (For grouping control system under which 2 or more outdoor units are connected, set one of the units to “0”.) Set refrigerant address using SW1 (3-6) on outdoor controller circuit board. • When LED1 on indoor controller board is also blinking. Check indoor/outdoor unit connecting wire Connection failure of indoor/outdoor unit connecting for connection failure. wire • When LED1 is lit 1 Miswiring of remote controller wires 1 Check the connection of remote Under twin indoor unit system, 2 or more indoor units controller wires in case of twin triple indoor unit system. When 2 or more indoor units are wired in one refrigerant system, connect remote controller wires to one of those units. 2 Refrigerant address for outdoor unit is wrong or not 2 Check the setting of refrigerant address set. in case of grouping control system. If Under grouping control system, there are some units there are some units whose refrigerant whose refrigerant address is 0. addresses are 0 in one group, set one of the units to 0 using SW1 (3-6) on outdoor controller circuit board. Short-cut of remote controller wires Remove remote controller wires and check LED2 on indoor controller board. Defective remote controller • When LED2 is blinking, check the short-cut of remote controller wires. • When LED2 is lit, connect remote controller wires again and: if LED2 is blinking, remote controller is defective; if LED2 is lit, connection failure of remote controller terminal block etc. has returned to normal. 21 8-5. TEST POINT DIAGRAM 8-5-1. Indoor power board SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH CN2S Connect to the indoor controller board (CN2D) to 12.6-13.7V DC (Pin (+)) between CNSK Connect to the indoor controller board (CNDK) between to 220-240V AC CN2S Connect to the indoor controller board (CN2D) to 12.6-13.7V DC (Pin (+)) between CNSK Connect to the indoor controller board (CNDK) between to 220-240V AC OC320G 22 8-5-2. Indoor controller board SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH LED1 Power supply LED2 Power supply (I.B) (R.B) LED3 Transmission (Indoor/outdoor) } CN2D Connector to the indoor power board (CN2S) (12.5~13.7V DC) SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH – } + + CN3C Transmission (Indoor/outdoor) (0~24V DC) – CN22 Remote controller connecting wire (10.4~14.6V DC) CN20 Room temperature thermistor (TH1) CN21 Pipe temperature thermistor/Liquid (TH2) CN29 Condenser/evaporator temperature thermistor (TH5) CND Power supply input (220~240V AC) FUSE (6.3A 250V) CN31 Drain sensor (DS) CNDK Connect to the indoor power board (CNSK) (220~240V AC) CN90 Connect to the wireless remote controller board (CNB) CNP Drain-pump output (DP) (220~240V AC) CN41 Connector (HA terminal-A) CN6V Vane motor output (MV) CNC Dew prevention heater (H2) (220~240V AC) CN105 (CN92) CN51 Centrally control -2 : Control signal 13V pulse input ( : +) - : Operation indicator 13VDC ( : +) 3-5 : Malfunction indicator 13VDC ( FAN Fan motor output CN2L Connector (LOSSNAY) SW3 Mode selection OC320G : +) SWE SW2 Emergency operation Capacity setting 23 Jumper connector J11~J15 Unit setting 8-6. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the dip switch on control P.C. board. Model setting and capacity setting are memorised in the nonvolatile memory of the indoor controller board. The black square (■) indicates a switch position. Jumper wire Setting by the dip switch and jumper wire Functions Setting Model SW2 Capacity setting SLZ-KA25VA(L) SLZ-KA25VAL2 SLZ-KA35VA(L) SLZ-KA50VA(L) Dip switch SW3 Function setting Remarks 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 ON OFF ON OFF ON OFF Action by switch opration ON OFF Function SW3-1 Power failure automatic recovery SW3-2 SW3-3 OFF ON Set temperature in heating mode (4 deg up) Available Not available Fan speed when the thermostat is OFF (during heating mode) Extra low Stop Not available Available SW3-4 SW3-5* SW3 function • Function setting becomes effective when the Dip switch SW3-5 is ON. * Switch off SW3-5 when the function setting is done by wired remote controller. OC320G 24 <Initial setting> SW3 1 2 3 4 5 ON OFF 8-7. TROUBLE CRITERION SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH OF MAIN PARTS SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH Parts name SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH Check method and criterion Room temperature thermistor (TH1) Measure the resistance with a tester. (Parts temperature 10°C ~ 30°C) Pipe temperature thermistor/liquid (TH2) Condenser/evaporator temperature thermistor (TH5) Normal Abnormal 4.3k~9.6k" Opened or short-circuited Measure the resistance between the terminals with a tester. (Coil wiring temperature 10°C ~ 30°C) Indoor fan motor (MF) Normal BLK BLU YLW BRN RED ORN WHT P : Thermal fuse 141 ± 3°C Vane motor (MV) White 4 KA35VA(L) KA25VAL2 KA50VA(L) WHT-BLK 386~428" 373~413" 308~341" BLK-BLU 81~91" 155~172" 135~151" Opened or short-circuited BLU-YLW 28~32" 44~49" 44~49" BRN-RED 157~174 302~335" 293~324" Measure the resistance between the terminals with a tester. (At the ambient temperature 20°C ~ 30°C) Connector M Red — Blue Red 1 Blue Normal Abnormal 300" Open or short Red — Yellow Orange 2 5 Abnormal KA25VA(L) P 3 Yellow Drain pump (DP) Red — Orange Red — White Measure the resistance between the terminals with a tester. (At the ambient temperature 20°C ~ 30°C) Yellow 1 Normal Abnormal 2 290" Open or short Yellow Drain sensor (DS) 1 2 3 OC320G Measure the resistance between the terminals with a tester. Measure the resistance after 3 minutes have passed since the power supply was intercepted. (At the ambient temperature 0°C ~ 60°C) Normal Abnormal 0.6k"~6.0k" Open or short 25 (Refer to the next page for a detail.) <Thermistor Characteristic graph> Thermistor for lower temperature < Thermistor for lower temperature > •Room temperature thermistor (TH1) •Pipe temperature thermistor/liquid (TH2) •Condenser/evaporator temperature thermistor (TH5) 50 40 Rt=15exp { 3480( 0˚C 10˚C 20˚C 25˚C 30˚C 40˚C 1 273+t Resistance (k) Thermistor R0=15kΩ ± 3% Fixed number of B=3480 ± 2% 1 )} 273 15kΩ 9.6kΩ 6.3kΩ 5.2kΩ 4.3kΩ 3.0kΩ 30 20 10 0 Thermistor for drain sensor 10 8 1 )} 273 7 Resistance (k) 0˚C 10˚C 20˚C 25˚C 30˚C 40˚C 60˚C 1 273+t < Thermistor for drain sensor > 9 Thermistor R0=6.0kΩ ±5% Fixed number of B=3390 ± 2% Rt=6exp { 3390( -20 -10 0 10 20 30 40 50 Temperature () 6.0kΩ 3.9kΩ 2.6kΩ 2.2kΩ 1.8kΩ 1.3kΩ 0.6kΩ 6 5 4 3 2 1 0 OC320G 26 -20 0 20 40 60 Temperature () 80 9 4-WAY AIR FLOW SYSTEM 9-1. FRESH AIR INTAKE (LOCATION FOR INSTALLATION) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required. Fresh air intake Detail drawing of fresh air intake 25 :100 :73.4 Cut out hole 118 3-:2.8 hole Burring hole 12 0 0 12 Ceiling surface Refrigerant pipe Electrical Box Drain pipe 9-2. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS SLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA35VA(L)R2.TH SLZ-KA50VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VALR3.TH SLZ-KA50VALR3.TH How to read curves 2.5 1 Curve in the left graphs 0 Q -50 -100 Q…Designed amount of fresh air intake <m3/min> A…Static pressure loss of fresh air intake duct system with air flow amount Q <Pa> … B Forced static pressure at air conditioner inlet with air flow amount Q <Pa> C…Static pressure of booster fan with air flow amount Q <Pa> D … Static pressure loss increase amount of fresh air intake duct system for air flow amount Q <Pa> E…Static pressure of indoor unit with air flow amount Q <Pa> Qa…Estimated amount of fresh air 3 intake without D <m /min> Duct characteristics at site A 2.0 Air flow : Q [m3/min] 3.0 3.5 C Static pressure : P [Pa] 50 0.5 1.0 1.5 0 B Taking air into the unit C A 2 E -150 -200 Q -250 D 3 A -300 NOTE: Fresh air intake amount should be 20% or less of whole air amount to prevent dew dripping. Q Qa 9-3. OPERATION IN CONJUNCTION WITH DUCT FAN (BOOSTER FAN) ● Whenever the indoor unit operates, the duct fan operates. (1) Connect the optional multiple remote controller adapter(PACSA88HA-E) to the connector CN51 on the indoor controller board. (2) Drive the relay after connecting the 12V DC relay between the Yellow and Orange connector wires. Use a relay of 1W or smaller. MB: Electromagnetic switch power relay for duct fan. X: Auxiliary relay (12V DC LY-1F) CN51 on indoor unit board 5 ~ Yellow 1 Connector (5P) Indoor unit side Red Brown Orange Multiple remote controller adapter PAC-SA88HA-E + MB Installation at site Be sure to secure insulation material by tape, etc. Indoor controller board Multiple remote controller adapter PAC-SA88HA-E Distance between indoor controller board and relay must be within 10m. CN51(WHT) CN51 OC320G Green Be sure to secure insulation material by tape, etc. 27 9-4. FIXING HORIZONTAL VANE Horizontal vane of each air outlet can be fixed according to the environment where it is installed. Setting procedure 1) Turn off a main power supply (Turn off a breaker). 2) Remove the vane motor connector in the direction of the arrow shown below with pressing the unlocking button as in the figure below. Insulate the disconnected connector with the plastic tape. Vane motor Vane motor Connector Unlocking button Horizontal vane 3) Set the vertical vane of the air outlet by hand slowly within the range in the table below. Measured standard position of the grille Horizontal vane <Set range> Standard of horizontal position Level 30° (Min.) Downward 45° Downward 55° Downward 70° (Max.) Dimension A (mm) 21 25 28 30 * Dimension between 21 mm and 30 mm can be arbitrarily set. Caution . Do not set the dimension out of the range. Erroneous setting could cause dew drips, smudge on ceiling or malfunction of unit. OC320G 28 10 DISASSEMBLY PROCEDURE SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA35VALR3.TH SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH SLZ-KA50VALR3.TH Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 1. Removing the air intake grille (1) Slide the knob of air intake grille to the direction of the arrow to open the air intake grille. (2) Remove the string hook from the panel to prevent the grille from dropping. (3) Slide the hinge of the intake grille to the direction of the arrow 2h and remove the air intake grille. Figure 1 Air intake grille Grille Air intake grille knob 2. Removing the fan guard (1) Open the air intake grille. (2) Remove the 3 screws of fan guard. Photo 1 Fan guard Screws Air intake grille 3. Removing the panel (1) Remove the air intake grille. (Refer to procedure 1) Corner panel (See Figure 2) (1) Remove the screw of the corner. (2) Slide the corner panel to the direction of the arrow , and remove the corner panel. Panel (See Photo 2) (1) Disconnect the connector that connects with the unit. (2) Remove the 2 screws from the panel and loose another 2 screws, which are fixed to the oval hole, have different diameter. (3) Rotate the panel a little to remove the screws. (Slide the panel so that the screw comes to a larger diameter of the oval hole, which has 2 different diameters.) Figure 2 Corner Screw panel Photo 2 Screws Connectors Screws Panel Photo 3 4. Removing the electrical parts (1) Remove the 2 screws and the control box cover. <Electrical parts in the control box> • Indoor controller board (I.B) • Terminal block (TB4) • Indoor power board (P.B) Indoor power board (P.B) Indoor controller board (I.B) OC320G Panel Corner panel 29 Terminal block (TB4) OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 5. Removing the room temperature thermistor (TH1) (1) Remove the panel. (Refer to procedure 3) (2) Pull out the room temperature thermistor from the drain pan. (3) Remove the 2 screws fixed to the control box cover, and remove the control box cover. (4) Remove the connector (CN20) from the indoor controller board, and disconnect the room temperature thermistor. Photo 4 Connectors Control box Drain plug Screw Screw Room temperature thermistor (TH1) 6. Removing the drain pan (1) Remove the panel. (Refer to procedure 3) (2) Remove the room temperature thermistor and the 2 lead wires held with fastener; wireless controller board relay connector (9P red) and panel relay connector (10P white). (3) Remove the 4 screws fixed to the drain pan, and remove the drain pan. (4) Remove the fan guard. (Refer to procedure 2) 7. Removing the pipe temperature thermistor/liquid (TH2) and condenser/evaporator temperature thermistor (TH5) (1) Remove the panel. (Refer to procedure 3) (2) Remove the drain pan. (Refer to procedure 6) (3) Disconnect the indoor coil thermistor from the holder. (4) Remove the 3 screws fixed to the piping cover, and remove the piping cover. (See Photo 9) (5) Remove the 2 screws fixed to the control box cover, and remove the control box cover. Drain pan Screw Screw Fan guard Control box Photo 5 Pipe temperature thermistor/liquid (TH2) (6) Remove the connector (CN21) from the indoor controller board, and disconnect the pipe temperature thermistor/liquid. Condenser/evaporator temperature thermistor (TH5) (6) Remove the connector (CN29) from the indoor controller board, and disconnect the condenser/evaporator temperature thermistor. Pipe temperature thermistor/liquid (TH2) 8. Removing the fan motor (MF) (1) Remove the panel. (Refer to procedure 3) (2) Remove the drain pan. (Refer to procedure 6) (3) Remove the nut and the washer from the turbo fan, and remove the turbo fan. (4) Remove the 2 screws fixed to the control box cover, and remove the control box cover. (5) Disconnect the connectors of the (fan 1) and the (fan 2) from the indoor controller board. (6) Remove the 3 screws fixed to the piping cover, and remove the piping cover. (See Photo 9) (7) Remove the 6 screws fixed to the flat plate, and remove the flat plate. (8) Disconnect the lead wires to the direction of the fan motor, and remove the 3 nuts of the fan motor. Photo 6 Flat plate Screws 30 Screw Nut Fan motor (MF) Nut Lead wires Screws Screw OC320G Condenser/evaporator temperature thermistor (TH5) Nut OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 9. Removing the drain pump (DP) and drain sensor (DS) (1) Remove the panel. (Refer to procedure 3 ) (2) Remove the drain pan. (Refer to procedure 6) (3) Remove the 2 screws fixed to the control box cover, and remove the control box cover. (4) Remove the connectors of the (CNP) and the (CN31) from the indoor controller board. (5) Remove the 1 screw fixed to the cover, and remove the cover. (6) Disconnect the lead wires to the direction of the drain pump. (See Photo 7) (7) Remove the 3 screws of the drain pump. (8) Cut the drain hose band, pull out the drain hose from the drain pump. (9) Pull out the drain pump. (10) Remove the drain sensor and the holder. Photo 7 Screw Cover Control box Lead wires Photo 8 Drain sensor (DS) Drain pump (DP) Drain hose Screws Screw Fixing band 10. Removing the heat exchanger (1) Remove the panel. (Refer to procedure 3 ) (2) Remove the drain pan. (Refer to procedure 6) (3) Remove the nut and the washer from the turbo fan, and remove the turbo fan. (4) Remove the 2 screws fixed to the control box cover, and remove the control box cover. (5) Disconnect the connector of the (fan) from the indoor controller board. (6) Remove the 3 screws fixed to the piping cover, and remove the piping cover. (See Photo 9) (7) Remove the pipe temperature thermistor/liquid and condenser/evaporator temperature thermistor. (Refer to procedure 7) (8) Disconnect the lead wires to the direction of the fan motor. (9) Remove the 1 coil support screw, the 2 inside coil screws (See Photo 10), and the 4 outside coil screws (See Photo 9) from the heat exchanger, and remove the heat exchanger. Control box Photo 9 Screws of piping cover Coil screws Coil screws Piping cover Lead wires Control box Photo 10 Coil screws Coil support Coil support screw Heat exchanger OC320G 31 11 PARTS LIST (Non-RoHS compliant) PANEL PARTS SLP-2AL(FOR SLZ-KA25/35/50VAL.TH) SLP-2AA(FOR SLZ-KA25/35/50VA.TH) 10 9 8 3 2 7 1 4 5 6 Q'ty/unit No. Parts No. Parts name Specification SLP-2AL SLP-2AA 103 003 AIR OUTLET GRILLE E07 158 003 AIR OUTLET GRILLE 2 E07 103 317 WIRELSS REMOTE CONTROL BOARD 1 3 E07 103 037 AUTO VANE 4 4 4 E07 103 975 CORNER PANEL 4 4 5 E07 103 100 AIR FILTER 1 1 6 E07 103 010 INTAKE GRILLE 1 1 7 E07 103 303 VANE MOTOR 4 4 8 E07 103 044 VANE BUSH 8 8 9 E07 103 031 GEAR (V) 4 4 10 E07 103 032 GEAR (M) 4 4 OC320G Wiring RecomDiagram mended Symbol Q'ty 1 E07 1 Remarks (Drawing No.) 1 32 W.B MV PARTS LIST (Non-RoHS compliant) ELECTRICAL PARTS SLZ-KA25VAL.TH SLZ-KA25VA.TH SLZ-KA35VAL.TH SLZ-KA35VA.TH SLZ-KA50VAL.TH SLZ-KA50VA.TH 5 4 1 No. Parts No. 2 Parts name 1 E07 006 382 FUSE E07 162 447 INDOOR CONTROLLER BOARD 2 E07 164 447 INDOOR CONTROLLER BOARD Q'ty/unit SLZ-KA Specification 25 35 50 25 35 50 VAL.TH VA.TH 1 1 1 1 1 1 250V 6.3A 1 1 1 166 447 INDOOR CONTROLLER BOARD 162 375 TERMINAL BLOCK 3P(S1, S2, S3) 4 E07 156 375 TERMINAL BLOCK 2P(1, 2) 5 E07 154 440 INDOOR POWER BOARD 1 1 6 E02 095 350 INDOOR FAN CAPACITOR 1.5+/ 440VAC 1 1 33 1 1 Remarks (Drawing No.) Wiring RecomDiagram mended Symbol Q'ty FUSE I.B 1 I.B 1 I.B 1 1 1 TB4 1 1 1 TB15 1 1 1 1 P.B 1 1 1 1 C1 1 E07 3 E07 OC320G 3 UNIT TO OUTDOOR 6 1 PARTS LIST (Non-RoHS compliant) FUNCTIONAL PARTS SLZ-KA25VAL.TH SLZ-KA35VAL.TH SLZ-KA50VAL.TH SLZ-KA25VA.TH SLZ-KA35VA.TH SLZ-KA50VA.TH 1 23 22 3 2 22 3 21 4 20 5 19 18 17 6 16 15 7 ON/OFF 8 AUTO COOL HEAT DRY TOO WARM TOO COOL FAN SELECT VANE TIME 24 MODE RESET 9 10 25 11 TEMP. ON/OFF 26 12 27 13 OC320G 14 34 PARTS LIST (Non-RoHS compliant) FUNCTIONAL PARTS 1 E07 104 290 BASE Q'ty/unit SLZ-KA 25 35 50 25 35 50 VAL.TH VA.TH 1 1 1 1 1 1 2 E07 104 124 DRUM-1 1 1 1 1 1 1 3 E07 104 808 LEG-1 2 2 2 2 2 2 4 E07 105 124 DRUM-2 1 1 1 1 1 1 1 No. Parts name Parts No. Specification Remarks (Drawing No.) Wiring RecomDiagram mended Symbol Q'ty 1 E07 140 620 INDOOR HEAT EXCHANGER 5 E07 141 620 INDOOR HEAT EXCHANGER E07 142 620 INDOOR HEAT EXCHANGER 6 E07 104 105 MOTOR MOUNT E07 162 300 INDOOR FAN MOTOR PK6V15-LD 7 E07 164 300 INDOOR FAN MOTOR PK6V20-LL E07 166 300 INDOOR FAN MOTOR PK6V20-LM 8 E07 104 816 FLAT PLATE 1 1 1 1 1 1 9 E07 104 502 TURBO FAN 1 1 1 1 1 1 10 E07 104 097 SPL WASHER 1 1 1 1 1 1 11 E07 104 700 DRAIN PAN 1 1 1 1 1 1 12 E07 154 308 ROOM TEMPERATURE THERMISTOR 1 1 1 1 1 1 13 E07 104 520 FAN GUARD 1 1 1 1 1 1 14 E07 104 524 DRAIN PLUG 1 1 1 1 1 1 15 E07 104 648 COIL SUPPORT 1 1 1 1 1 1 1 1 1 1 1 1 TH5 TH2 1 1 1 1 3 3 CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR 3 3 3 3 1 1 MF 1 1 MF 1 1 16 E07 154 309 17 E07 154 307 PIPE TEMPERATURE THERMISTOR / LIQUID 1 1 1 1 1 1 18 E07 104 702 DRAIN HOSE 1 1 1 1 1 1 19 E07 104 266 DRAIN SENSOR 1 1 1 1 1 1 20 E07 104 241 SENSOR HOLDER 1 1 1 1 1 1 21 E07 104 355 DRAIN PUMP 1 1 1 1 1 1 22 E07 104 809 LEG-2 2 2 2 2 2 2 23 E07 154 006 COVER (DRUM) 1 1 1 1 1 1 24 E07 140 426 WIRELESS REMOTE CONTROLLER 1 1 1 25 E02 527 083 REMOTE CONTROLLER HOLDER 1 1 1 26 E07 159 426 REMOTE CONTROLLER 1 1 1 27 E07 018 089 REMOTE CONTROLLER CABLE 1 1 1 OC320G 35 3PCS/SET MF TH1 DS DP W.R 12 RoHS PARTS LIST (RoHS compliant) FUNCTIONAL PARTS SLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA35VA(L)R2.TH SLZ-KA25VAL2.TH SLZ-KA35VALR3.TH SLZ-KA50VALR3.TH 23 22 1 3 2 22 21 3 4 20 5 19 18 17 6 16 15 7 8 ON/OFF AUTO COOL HEAT DRY TOO WARM TOO COOL FAN SELECT VANE TIME 24 MODE 9 RESET 10 25 11 TEMP. 12 ON/OFF 26 13 14 27 OC320G 36 RoHS PARTS LIST (RoHS compliant) No. RoHS FUNCTIONAL PARTS Parts name Parts No. Specification 25 35 50 VAL.TH VAL1.TH VALR2.TH Q'ty/unit SLZ-KA Wiring 25 35 50 25 35 50 Remarks Diagram VA.TH (Drawing No.) Symbol VA1.TH VAL2.TH VALR3.TH VAR2.TH 1 G E17104290 BASE 1 1 1 1 1 1 1 1 1 2 G E17104124 DRUM-1 1 1 1 1 1 1 1 1 1 3 G E17104808 LEG-1 2 2 2 2 2 2 2 2 2 4 G E17105124 DRUM-2 1 1 1 1 1 1 1 1 1 1 1 G E17140620 INDOOR HEAT EXCHANGER 1 1 5 G E17141620 INDOOR HEAT EXCHANGER 1 G E17142620 INDOOR HEAT EXCHANGER 1 1 6 G E17104105 MOTOR MOUNT 3 3 G E17162300 INDOOR FAN MOTOR PK6V15-LD 7 G E17164300 INDOOR FAN MOTOR PK6V20-LL G E17166300 INDOOR FAN MOTOR PK6V20-LM 3 3 3 3 1 1 1 1 3 1 1 1 G E17756502 TURBO FAN 1 1 1 1 1 1 G E17766502 TURBO FAN 1 1 1 1 1 1 MF 1 1 1 G E17439097 SPL WASHER 3 MF 1 1 10 3 1 1 8 G E17104816 FLAT PLATE 9 1 1 1 1 1 1 1 1 1 1 1 MF 1 G E17766097 SPL WASHER 11 G E17104700 DRAIN PAN 1 1 1 1 1 1 1 1 1 12 G E17154308 ROOM TEMPERATURE THERMISTOR 1 1 1 1 1 1 1 1 1 13 G E17104520 FAN GUARD 1 1 1 1 1 1 1 1 1 14 G E17104524 DRAIN PLUG 1 1 1 1 1 1 1 1 1 15 G E17104648 COIL SUPPORT 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 TH5 17 G E17154307 PIPE TEMPERATURE THERMISTOR / LIQUID 1 1 1 1 1 1 1 1 1 TH2 18 G E17104702 DRAIN HOSE 1 1 1 1 1 1 1 1 1 19 G E17104266 DRAIN SENSOR 1 1 1 1 1 1 1 1 1 20 G E17104241 SENSOR HOLDER 1 1 1 1 1 1 1 1 1 21 G E17104355 DRAIN PUMP 1 1 1 1 1 1 1 1 1 22 G E17104809 LEG-2 2 2 2 2 2 2 1 1 1 1 16 G E17154309 CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR 2 2 2 23 G E17154006 COVER (DRUM) 1 1 1 24 G E17140426 WIRELESS REMOTE CONTROLLER 1 1 1 1 1 1 25 G E12527083 REMOTE CONTROLLER HOLDER 1 1 1 1 1 1 1 1 26 G E17159426 REMOTE CONTROLLER 1 1 1 27 G E17018089 REMOTE CONTROLLER CABLE 1 1 1 OC320G 37 TH1 DS DP W.R RoHS PARTS LIST (RoHS compliant) PANEL PARTS SLP-2AL (FOR SLZ-KA25/35/50VAL.TH) SLP-2AA (FOR SLZ-KA25/35/50VA.TH) SLP-2ALW (FOR SLZ-KA25/35/50VAL1.TH, SLZ-KA25/35/50VALR2.TH) (FOR SLZ-KA25VAL2.TH, SLZ-KA35/50VALR3.TH) SLP-2AAW (FOR SLZ-KA25/35/50VA1.TH SLZ-KA25/35/50VAR2.TH) 10 9 8 3 2 7 1 4 5 No. RoHS 6 Q'ty/unit Parts No. Parts name Specification AL G E17 103 003 AIR OUTLET GRILLE G E17 158 003 AIR OUTLET GRILLE G E17 423 003 AIR OUTLET GRILLE G E17 424 003 AIR OUTLET GRILLE 2 G E17 103 317 WIRELSS REMOTE CONTROL BOARD 1 G E17 103 037 AUTO VANE 4 G E17 423 037 AUTO VANE G E17 103 975 CORNER PANEL 1 3 4 Remarks (Drawing No.) SLP-2 AA ALW AAW 1 1 1 1 4 W.B 1 4 4 4 4 4 1 1 1 1 4 G E17 423 975 CORNER PANEL 5 G E17 103 100 AIR FILTER 1 1 G E17 103 010 INTAKE GRILLE 1 1 G E17 423 010 INTAKE GRILLE 7 G E17 103 303 VANE MOTOR 4 4 4 4 8 G E17 103 044 VANE BUSH 8 8 8 8 9 G E17 103 031 GEAR (V) 4 4 4 4 10 G E17 103 032 GEAR (M) 4 4 4 4 6 OC320G Wiring RecomDiagram mended Symbol Q'ty 38 MV RoHS PARTS LIST (RoHS compliant) ELECTRICAL PARTS SLZ-KA25VA(L).TH SLZ-KA25VA(L)1.TH SLZ-KA25VA(L)R2.TH SLZ-KA35VA(L).TH SLZ-KA35VA(L)1.TH SLZ-KA35VA(L)R2.TH SLZ-KA50VA(L).TH SLZ-KA50VA(L)1.TH SLZ-KA50VA(L)R2.TH 6 5 1 1 3 G E17 006 382 FUSE Q'ty/unit Wiring RecomRemarks SLZ-KA Diagram mended Specification 25 35 50 25 35 50 25 35 50 25 35 50 (Drawing No.) Symbol Q'ty VAL(1).TH VA(1).TH VALR2.TH VAR2.TH FUSE 250V 6.3A 1 1 1 1 1 1 G E17 250 382 FUSE 250V 6.3A RoHS No. 2 4 UNIT TO OUTDOOR 7 Parts No. Parts name 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 G E12 661 385 VARISTOR 1 G E17 162 447 INDOOR CONTROLLER BOARD 1 3 G E17 164 447 INDOOR CONTROLLER BOARD 1 1 ZNR I.B 1 1 1 1 G E17 166 447 INDOOR CONTROLLER BOARD 1 1 1 FUSE I.B 1 I.B 4 G E17 162 375 TERMINAL BLOCK 3P(S1,S2,S3) 1 1 1 1 1 1 1 1 1 1 1 1 TB4 5 G E17 156 375 TERMINAL BLOCK 2P(1,2) 1 1 1 TB15 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 P.B 7 G E12 095 350 INDOOR FAN CAPACITOR 1.5+/ 440VAC 1 1 1 1 1 1 1 1 1 1 1 1 C1 6 G E17 154 440 INDOOR POWER BOARD OC320G 39 RoHS PARTS LIST (RoHS compliant) ELECTRICAL PARTS SLZ-KA25VAL2.TH SLZ-KA35VALR3.TH SLZ-KA50VALR3.TH 4 No. RoHS 1 Parts No. 3 UNIT TO OUTDOOR 5 2 Parts name 1 G E17 250 382 FUSE Q'ty/unit SLZ-KA Specification 50 25 35 VALR3.TH VAL2.TH 1 1 1 250V 6.3A 2 G E17 851 447 INDOOR CONTROLLER BOARD Wiring Recom- Remarks Diagram mended (Drawing No.) Symbol Q'ty FUSE 1 1 1 I.B 1 1 1 TB4 4 G E17 852 440 INDOOR POWER BOARD 1 1 1 P.B 5 G E12 095 350 INDOOR FAN CAPACITOR 1.5+/ 440VAC 1 1 1 C1 3 G E17 162 375 TERMINAL BLOCK 3P(S1,S2,S3) HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Copyright 2005 MITSUBISHI ELECTRIC CORPORATION Distributed in Aug. 2013 No.OC320 REVISED EDITION-G Distributed in Apr. 2013 No.OC320 REVISED EDITION-F Distributed in Oct. 2012 No.OC320 REVISED EDITION-E Distributed in Feb. 2012 No.OC320 REVISED EDITION-D Distributed in Dec. 2011 No.OC320 REVISED EDITION-C Distributed in Jul. 2007 No.OC320 REVISED EDITION-B PDF 7 Distributed in Sep. 2006 No.OC320 REVISED EDITION-A PDF 7 Distributed in Feb. 2005 No.OC320 PDF 8 Made in Japan New publication, effective Aug. 2013 Specifications are subject to change without notice.