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Change for Life Service Manual GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI 6HUYLFH0DQXDO 7DEOHRI&RQWHQWV 3DUWĉ 7HFKQLFDO,QIRUPDWLRQ 6XPPDU\ 6SHFL¿FDWLRQV 6SHFL¿FDWLRQ6KHHW 1RLVH&ULWHULD&XUYH7DEOHVIRU%RWK0RGHOV 2XWOLQH'LPHQVLRQ'LDJUDP 5HIULJHUDQW6\VWHP'LDJUDP (OHFWULFDO3DUW :LULQJ'LDJUDP 3&%3ULQWHG'LDJUDP )XQFWLRQDQG&RQWURO 5HPRWH&RQWUROOHU,QWURGXFWLRQ %ULHI'HVFULSWLRQRI0RGHVDQG)XQFWLRQV 3DUWĊ ,QVWDOODWLRQDQG0DLQWHQDQFH 1RWHVIRU,QVWDOODWLRQDQG0DLQWHQDQFH ,QVWDOODWLRQ ,QVWDOODWLRQ'LPHQVLRQ'LDJUDP ,QVWDOODWLRQ3DUWVFKHFNLQJ 6HOHFWLRQRI,QVWDOODWLRQ/RFDWLRQ 5HTXLUHPHQWV)RUHOHFWULF&RQQHFWLRQ ,QVWDOODWLRQRI,QGRRU8QLW &KHFNDIWHU,QVWDOODWLRQDQG7HVW2SHUDWLRQ 0DLQWHQDQFH (UURU&RGH 3URFHGXUHRI7URXEOHVKRRWLQJ ([SORGHG9LHZDQG3DUWV¶/LVW 5HPRYDO3URFHGXUH $SSHQGL[ $SSHQGL[5HIHUHQFH6KHHWRI&HOVLXVDQG)DKUHQKHLW $SSHQGL[&RQ¿JXUDWLRQRI&RQQHFWLRQ3LSH $SSHQGL[3LSH([SDQGLQJ0HWKRG $SSHQGL[/LVWRI5HVLVWDQFHIRU$PELHQW7HPSHUDWXUH6HQVRU 6HUYLFH0DQXDO 3DUWĉ 7HFKQLFDO,QIRUPDWLRQ 6XPPDU\ *:+5$.'1$(,&ROG3ODVPD *:+5%.'1$(,&ROG3ODVPD *:+5&.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5%.'1$(,&ROG3ODVPD *:+5&.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5%.'1$(,&ROG3ODVPD *:+5&.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(, *:+5%.'1$(,&ROG3ODVPD *:+5%.'1$(, *:+5&.'1$(,&ROG3ODVPD *:+5&.'1$(, 5HPRWH&RQWUROOHU FAN MODE I F EEL <7);)$1 7HFKQLFDO,QIRUPDWLRQ CLOCK TIMER ON X-FAN TEMP TIMER OFF TURBO SLEEP LIGHT 6HUYLFH0DQXDO 6SHFL¿FDWLRQV 6SHFL¿FDWLRQ6KHHW *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD 0RGHO *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD 3URGXFW&RGH *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(,&ROG3ODVPD *:+5$.'1$(, &%1 &%1 &%1 &%1 &%1 &%1 &%1 &%1 5DWHG9ROWDJH 5DWHG)UHTXHQF\ 3KDVHV &RROLQJ&DSDFLW\ +HDWLQJ&DSDFLW\ $LU)ORZ9ROXPH6++0/ 'HKXPLGLI\LQJ9ROXPH )DQ7\SH )DQ'LDPHWHUKHLJKW 9a +] : : PK /K PP )DQ0RWRU6SHHG6++0/ USP )DQ0RWRU3RZHU2XWSXW )DQPRWRUUXQQLQJFXUUHQW )DQ0RWRU&DSDFLWRU (YDSRUDWRU0DWHULDO (YDSRUDWRU3LSH'LDPHWHU (YDSRUDWRU1XPEHURI5RZV (YDSRUDWRU)LQ3LWFK (YDSRUDWRU/HQJWK/;+HLJKW+;:LGWK: 0RWRU0RGHO 2YHUORDG3URWHFWRU 0RWRU)XOO/RDG$PS)/$ 6RXQG3UHVVXUH/HYHO6++0/ 6RXQG3RZHU/HYHO6++0/ 2XWOLQH'LPHQVLRQ:;';+ 3DFNDJH&DUWRQ'LPHQVLRQ/;:;+ 3DFNDJH'LPHQVLRQ/;:;+ 1HW:HLJKW *URVV:HLJKW /LTXLGSLSH *DV3LSHWRLQGRRUXQLW : $ ȝ) PP PP PP $ G%$ G%$ PP PP PP NJ NJ PP PP &URVVÀRZ ĭ; 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FRRO KHDW $OXPLQXP)LQFRSSHU7XEH ;; )1-3* ;; ;; ;; ĭ ĭ &URVVÀRZ ĭ; FRRO KHDW $OXPLQXP)LQFRSSHU7XEH ;; )193* ;; ;; ;; ĭ ĭ 7KHDERYHGDWDLVVXEMHFWWRFKDQJHZLWKRXWQRWLFHSOHDVHUHIHUWRWKHQDPHSODWHRIWKHXQLW 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 1RLVH&ULWHULD&XUYH7DEOHVIRU%RWK0RGHOV 50 Noice/dB(A) 45 12K 40 18K 35 07/09K 30 Low Middle High Super High Indoor Fan Motor Rotating Speed 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 2XWOLQH'LPHQVLRQ'LDJUDP W H D 38 605 151 .8QLW Φ55 Φ55 36 55 131 80 542 172 .8QLW Φ55 Φ55 50 85 69 55 694 196 .8QLW Φ55 Φ55 45 38 116 8QLWPP 0RGHO . . . 7HFKQLFDO,QIRUPDWLRQ : + ' 6HUYLFH0DQXDO 5HIULJHUDQW6\VWHP'LDJUDP outdoor indoor filter A heat exchanger A3 A1 filter B heat exchanger fan A2 outdoor heat exchanger 4-way valve B3 B1 SP filter B2 high pressure switch Note: Not available for 14K/18K model discharge silencer C heat exchanger C3 C1 filter D3 C2 D1 filter D2 gas -liquid separator inverter compressor D heat exchanger discharge temperature sensor Note: Not available for 14K/18K model A1:A-unit electronic expansion valve B1:B-unit electronic expansion valve C1:C-unit electronic expansion valve D1:D-unit electronic expansion valve A2:A-unit gas pipe temperature sensor B2:B-unit gas pipe temperature sensor C2:C-unit gas pipe temperature sensor D2:D-unit gas pipe temperature sensor A3:A-unit liquid pipe temperature sensor B3:B-unit liquid pipe temperature sensor C3:C-unit liquid pipe temperature sensor D3:D-unit liquid pipe temperature sensor 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO (OHFWULFDO3DUW :LULQJ'LDJUDP Ɣ,QVWUXFWLRQ 6\PERO 6\PERO&RORU 6\PERO 6\PERO&RORU 6\PERO 1DPH :+ :KLWH *1 *UHHQ &$3 -XPSHUFDS <( <HOORZ %1 %URZQ &203 &RPSUHVVRU 5' 5HG %8 %OXH <(*1 <HOORZ*UHHQ %. %ODFN 97 9LROHW 2* 2UDQJH *URXQGLQJZLUH 1RWH-XPSHUFDSLVXVHGWRGHWHUPLQHIDQVSHHGDQGWKHVZLQJDQJOHRIKRUL]RQWDOORYHUIRUWKLVPRGHO Ɣ,QGRRU8QLW FAN MOTOR ROOM TUBE TEM.SENSOR TEM.SENSOR M1 RT2 RT1 0 0 ROOM TUBE CAP AP2 JUMP DISP1 DISP2 SWING-UD HEALTH-L M2 AP1 RECEIVER AND SWING DISPLAY BOARD MOTOR HEALTH-N 1BU 3BK 2BN XT N(1) 2 3 BU BK BN YEGN 4YEGN PE EVAPORATOR OUTDOOR UNIT PG PGF N COM-OUT AC-L BU RD COOL PLASMA GENERATOR (optional) 7KHVHZLULQJGLDJUDPVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFHSOHDVHUHIHUWRWKHRQHVXSSOLHGZLWKWKHXQLW 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 3&%3ULQWHG'LDJUDP Ɣ7RSYLHZ 3 4 5 13 6 7 8 2 ,QWHUIDFHRIOLYHZLUH ,QWHUIDFHRIQHXWUDOZLUH +HDOWKFRQWUROFRQQHFWRU &RQWUROFRQQHFWRURILQGRRU IDQ 5&FDSDFLWRU $XWREXWWRQ 8SGRZQVZLQJ )HHGEDFNLQWHUIDFHRI LQGRRUIDQ ,QWHUIDFHRIMXPSHUFDS 9 1 10 'LVSOD\FRQWUROLQWHUIDFH $PELHQWWHPSHUDWXUHVHQVRU LQWHUIDFH ,QGRRUWXEHWHPSHUDWXUH VHQVRULQWHUIDFH ,QWHUIDFHRILQGRRUDQG RXWGRRUXQLWFRPPXQLFDWLRQ 12 11 Ɣ%RWWRPYLHZ 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO )XQFWLRQDQG&RQWURO 5HPRWH&RQWUROOHU,QWURGXFWLRQ 1 2 3 4 1 2 4 6 3 5 5 6 7 8 7 9 10 11 12 13 14 15 16 17 ON/OFF Press it to start or stop operation. -: Press it to decrease temperature setting. +: Press it to increase temperature setting. FAN Press it to set fan speed. MODE Press it to select operation mode (AUTO/COOL/DRY/FAN/HEAT). I FEEL Press it to set HE ALTH function 8 9 10 Press it to set AIR function. CLOCK Press it set clock. TIMER ON Press it to set auto-on timer. 11 12 13 14 15 16 17 Press it set swing angle. X-FAN TEMP TIMER OFF Press it to set auto-off timer TURBO SLEEP LIGHT Press it to turn on/off the light. 31 30 29 28 27 26 25 24 18 18 MODE icon: If MODE button is pressed, current operation mode icon models) will show. 7HFKQLFDO,QIRUPDWLRQ 19 20 21 22 (AUTO), ( COOL), 23 (DRY), (FAN) or (HEAT only for heat pump 6HUYLFH0DQXDO 19 SLEEP icon : is displayed by pressing the SLEEP button. Press this button again to clear the display. 20 TEMP icon: (“ ”function is applicable to partial of models.) Pressing TEMP button, (set temperature), 21 Up & down swing icon: 22 LIGHT icon: 23 LOCK icon: 24 SET TIME display: (ambient temperature), (outdoor ambient temperature) and blank is displayed circularly. is displayed when pressing the up & down swing button. Press this button again to clear the display. is displayed by pressing the LIGHT button. Press LIGHT button again to clear the display. is displayed by pressing "+" and “-” buttons simultaneously. Press them again to clear the display. After pressing TIMER button, ON or OFF will blink.This area will show the set time. 25 TURBO icon: 26 DIGITAL display: is displayed when pressing the TURBO button.Press this button again to clear the display. This area will show the set temperature.During defrosting operation,“H1” will be displayed. 27 AIR icon: (NOTE: This function is applicable to partial of models.) 28 I FEEL icon: 29 FAN SPEED display: is displayed when pressing the AIR button.Press this button again to clear the display. is displayed when pressing the I FEEL button. Press this button again to clear the display. Press FAN button to select the desired fan speed setting (AUTO-Low-Med-High).Your selection will be displayed in the LCD windows, except the AUTO fan speed. 30 HEALTH icon: 31 X-FAN icon: is displayed when pressing the HEALTH button. Press this button again to clear the display. is displayed when pressing the X-FAN button. Press this button again to clear the display. 1 ON/OFF: Press this button to turn on the unit .Press this button again to turn off the unit. 2 -: Press this button to decrease set temperature. Hold it down for above 2 seconds to rapidly decrease set temperature. In AUTO mode, set temperature is not adjustable. 3 +: Press this button to increase set temperature. Hold it down for above 2 seconds to rapidly increase set temperature. In AUTO mode, set temperature is not adjustable. 4 FAN : This button is used for setting Fan Speed in the sequence that goes from AUTO, , , to then back to Auto. AUTO Low speed Medium speed High speed 5 MODE : Each time you press this button, a mode is selected in a sequence that goes from AUTO,COOL,DRY, FAN,and HEAT *, as the following: AUTO COOL DRY FAN HEAT * *Note: Only for models with heating function. After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will not be displayed on the LCD, and the unit will automatically select the suitable operation mode in accordance with the room temperature to make indoor room comfortable. 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 6 I FEEL: Press this button to turn on I FEEL function. The unit automatically adjust temperature according to the sensed temperature. Press this button again to cancel I FEEL function. 7 Press this button to set HEALTH function ON or OFF. After the unit is turned on, it defaults to HEALTH function ON. 8 (NOTE: This function is applicable to partial of models.) Press this button to select AIR function ON or OFF. 9 CLOCK : Pressing CLOCK button, blinks. Within 5 seconds, pressing + or - button adjusts the present time. Holding down either button above 2 seconds increases or decreases the time by 1 minute every 0.5 second and then by 10 minutes every 0.5 second. During blinking after setting, press CLOCK button again to confirm the setting, and then 10 will be constantly displayed. TIMER ON : Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply press this button again. After pressing this button, disappears and " ON " blinks . 00:00 is displayed for ON time setting. Within 5 seconds, press + or - button to adjust the time value. Every press of either button changes the time setting by 1 minute. Holding down either button rapidly changes the time setting by 1 minute and then 10 minutes. Within 5 seconds after setting, press TIMER ON button to confirm. 11 Press this button to set up & down swing angle, which circularly changes as below: AUTO This remote controller is universal. If any command , , or is sent out,the unit will carry out the command as indicates the guide louver swings as: 12 X-FAN: Pressing X -FAN button in COOL or DRY mode, the icon is displayed and the indoor fan will continue operation for 2 minutes in order to dry the indoor unit even though you have turned off the unit. After energization, X-FAN OFF is defaulted. X-FAN is not available in AUTO, FAN or HEAT mode. 13 TEMP: Press this button, you can see indoor set temperature, indoor ambient temperature on indoor unit’s display. The setting on remote controller is selected circularly as below: When selecting " " no display " with remote controller or no display, temperature indicator on indoor unit displays set temperature; When selecting " with remote controller,temperature indicator on indoor unit displays indoor ambient temperature; 3s later or within 3s it receives other remote control signal that will return to display the setting temperature. Caution: ●This model hasn't outdoor ambient temperature display function. While remote controller can operate " "and indoor unit displays set temperature. ●It’s defaulted to display set temperature when turning on the unit. ●Only for the models with temperature indicator on indoor unit. 14 TIMER OFF : Press this button to initiate the auto-off timer. To cancel the auto-timer program, simply press the button again. TIMER OFF setting is the same as TIMER ON. 15 TURBO: Press this button to activate/deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time. In COOL mode, the unit will blow strong cooling air at super high fan speed. In HEAT mode, the unit will blow strong heating air at super high fan speed. (This function is not applicable for some models). 16 SLEEP: Press this button to go into the SLEEP operation mode. Press it again to cancel this function. This function is available in COOL, HEAT (Only for models with heating function) mode to maintain the most comfortable temperature for you. 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 17 LIGHT: Press LIGHT button to turn on the display's light and press this button again to turn off the display's light. If the light is turned on, displayed. If the light is tunrned off , 18 Combination of "+" and "-" buttons: About lock Press "+" and "-" buttons simultaneously to lock or unlock the keypad. If the remote controller is locked, pressing any button, 19 is displayed. In this case, blinks three times. Combination of "MODE" and "-" buttons: About switch between Fahrenheit and Centigrade At unit OFF, press "MODE" and "-" buttons simultaneously to switch between °C and °F. 5HSODFHPHQWRI%DWWHULHV 1.Remove the battery cover plate from the rear of the remote controller. (As shown in the figure) 2.Take out the old batteries. 3.Insert two new AAA1.5V dry batteries, and pay attention to the polarity. 4. Reinstall the battery cover plate. ★Notes: ●When replacing the batteries, do not use old or different types of batteries, otherwise, it may cause malfunction. ●If the remote controller will not be used for a long time, please remove batteries to prevent batteries from leaking. ●The operation should be performed in its receiving range. ●It should be kept 1m away from the TV set or stereo sound sets. ●If the remote controller does not operate normally, please take the Sketch map for replacing batteries batteries out and reinsert them after 30 seconds. If it still can't operate properly,replace the batteries. is disappears. 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO %ULHI'HVFULSWLRQRI0RGHVDQG)XQFWLRQV ,%DVLF2SHUDWLRQ0RGH &RRO'U\+HDW$XWR)DQ ,,%DVLF)XQFWLRQV &RROLQJ2QO\ 8QGHUWKLVPRGHIDQDQGVZLQJUXQDWSUHVHWVWDWXVWKHWHPSHUDWXUHVHWWLQJUDQJHLV& C B A indoor temperature---target temperature 8QGHUPDOIXQFWLRQIRURXWGRRUXQLWDQGSURWHFWLRQVWRSWKHLQGRRUXQLWUXQVZLWKWKHRULJLQDOVWDWXVDQGGLVSOD\PDOIXQFWLRQ 7KHLQGRRUIDQVWRSVZKHQWKHPRGHVFRQÀLFWZLWKHDFKRWKHU 'U\0RGH 8QGHUWKLVPRGHWKHLQGRRUIDQUXQVZLWKORZVSHHGDQGVZLQJUXQVDWSUHVHWVWDWXVWKHWHPSHUDWXUHVHWWLQJUDQJHLV& 8QGHUPDOIXQFWLRQIRURXWGRRUXQLWDQGSURWHFWLRQVWRSWKHLQGRRUXQLWUXQVZLWKWKHRULJLQDOVWDWXVDQGGLVSOD\PDOIXQFWLRQ +HDWLQJ0RGH 8QGHUWKLVPRGHWKHWHPSHUDWXUHVHWWLQJUDQJHLV& A target temperature---indoor temperature B C :RUNLQJFRQGLWLRQDQG3URFHVVRI+HDWLQJ :KHQ WKH XQLW LV 21 DQGLQKHDWLQJPRGHLQGRRUIDQVWDUWVFROGDLUSUHYHQWLRQRSHUDWLRQZKHQWKHXQLWLVRIIDQGWKHLQGRRU IDQ VWRSSHGEHIRUHLWEORZVUHVLGXDOKHDW 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Compulsory defrosting function (1) Entry condition of compulsory defrosting function Under heating operation and set temperature is 16ć, press “+, -, +, -, +, -” successively within 5s and indoor unit will enter into compulsory defrosting setting. Indoor unit will send compulsory defrosting model signal to outdoor unit. When outdoor unit received compulsory defrosting signal from indoor unit, the unit will operate under normal defrosting model. When indoor unit received the signal that outdoor unit has entered into defrosting status, it will cancel to send compulsory defrosting mode to outdoor unit. Heating indicator on indoor unit will be OFF 0.5 and ON 10s successively. ˄2˅ Exit condition of compulsory defrosting function After defrosting is finished, outdoor unit will send normal operation mode to indoor unit. When indoor unit received the normal operation model from outdoor unit, the unit will operate as the normal mode. 5HIULJHUDQW5HFRYHU\)XQFWLRQ (1) Entry condition of Freon recovery (Freon recovery mode) Enter into refrigerant recovery mode actively (Freon recovery mode˅: After energized for 5min, turn on the unit under cooling mode and set 16ć, press light button for 3 times within 3s to enter into Freon recovery mode, Fo is displayed. Freon recovery model will be sent to outdoor unit. Enter into refrigerant recovery mode passively: When indoor unit hasn’t set Freon recovery mode, if it received Freon recovery signal from outdoor unit, indoor unit will enter into Freon mode and it will also send Freon recovery mode to outdoor unit. Fo will be displayed. (2) Exit condition of refrigerant recovery function (Freon recovery mode) Exit refrigerant recovery mode actively (Freon recovery mode): After entering into Freon recovery mode, if it has received any signal from remote controller or entered into Freon recovery mode for 25min, the unit will exit Freon recovery mode. Exit refrigerant recovery mode passively (Freon recovery mode): If it can’t receive Freon recovery mode fro outdoor unit any more, the unit will exit Freon recovery mode and indoor unit will stop sending Freon signal to outdoor unit. The action of entering into Freon recovery mode: Indoor unit operates under cooling mode. Fan speed is super high speed and set temperature is 16ć. Horizontal louver will stay at the minimum operation angle. 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1RWH3OHDVHUHIHUWRVHUYLFHPDQXDOIRUWKHWURXEOHVKRRWLQJSURFHGXUHIRURXWGRRUXQLW ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 3URFHGXUHRI7URXEOHVKRRWLQJ 0DOIXQFWLRQRI7HPSHUDWXUH6HQVRU)) Start Is the wiring terminal between temperature sensor and the controller loosened or poo rly contacted? yes Insert the temperature sensor tightly no no Is there short circuit due to tri-pover of the pa rts? Malfunction is eliminated. yes Make the parts upright no no Is the tem perature sensor normal according to the Resistance Table? Malfunction is eliminated. yes no Replace it with a temperature sensor of the same model yes no Malfunction is removed. yes Replace the controller with one of the same model yes End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 0DOIXQFWLRQRI%ORFNHG3URWHFWLRQRI,'8)DQ0RWRU+ Troubleshooting for H6 malfunction Stir the blade with a tool to see whether the blade rotates smoothly yes no Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them Is malfunction eliminated no Is the control terminal of PG motor connected tightly ? yes no Insert the control terminal of PG motor tightly yes Is malfunction eliminated no Stir the blade by hand to see whether the blade rotate s smoothly yes no Reinstall the blade and motor correctly yes no Turn on the unit again ; measure whether the output voltage on control terminal for PG motor is more than 50V within 1 min after the louvers are opened yes Measure the voltage of this foot to neutral wire on the mainboard Is malfunction eliminated yes yes yes Is the motor started up no no Replace PG motor no Is malfunction eliminated yes Replace the mainboard with the same model. End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 0DOIXQFWLRQRI3URWHFWLRQRI-XPSHU&DS& Troubleshooting for C5 malfunction Is there jumper cap on the mainboard? no Appearance of the jumper cap Assemble the jumper cap with the same model yes Is malfunction eliminated no Is the jumper cap inserted correctly and tightly ? no Insert the jumper cap tightly yes no Is malfunction eliminated yes Replace the jumper cap with the same model yes Is malfunction eliminated yes no Replace the mainboard with the same model. End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 0DOIXQFWLRQRI=HURFURVVLQJ,QVSHFWLRQ&LUFXLW0DOIXQFWLRQRIWKH,'8)DQ0RWRU8 Troubleshooting for U8 malfunction Re-energize1 minute after de-erergization U8 is still displayed No The unit returns to normal. Conclusion:U8 is displayed due to instant energization afte deenergization while the capacitor discharges slowly. Yes The zero-cross detection circuit of the mainboard is defined abnormal.Replace the mainboard with the same model End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO (0DOIXQFWLRQ Communication malfunction of some indoor units De-energize the unit and check if the connecting wire of indoor and outdoor unit and wiring of electric box are correct. Is wire connected No Connect wires according to the correctly˛ Is malfunction Yes removed˛ wiring diagram No Yes De-energize the unit. Change the communication cable of indoor units. Energize the unit and wait for 3 min Does the broken-down indoor Yes Replace mainboard of outdoor unit unit resume normal? No Replace the broken-down mainboard of the indoor unit End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO Communication malfunction of all indoor units De-energize the unit and check if the connecting wire of indoor and outdoor unit and wiring of electric box are correct. No Is wire connected Connect wires according to the correctly˛ wiring diagram Yes Is malfunction removed˛ No Yes De-energize the unit. Check if the connecting wire between outdoor mainbaord and filter plate is correct. Is wire connected Connect wires No according to the correctly˛ wiring diagram Yes Is malfunction removed˛ No Yes Is connecting wire Yes damaged˛ Replace the Is malfunction connecting wire removed˛ Yes No No Check if there is power input between neutral wire and live wire of outdoor unit. Is there power No input? 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,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO *:+5&.'1$(,&ROG3ODVPD 39 ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 1R 'HVFULSWLRQ 3URGXFW&RGH )URQW3DQHO$VV\ 'LVSOD\%RDUG )LOWHU6XE$VV\ 6FUHZ&RYHU )URQW&DVH6XE$VV\ 5HDU&DVHDVV\ *XLGH/RXYHU $LU/RXYHU %DIÀ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teps Procedure 1.Before disassembly 2.Removal of filter and horizontal louver 1 Open the front panel 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Filter 3 Remove axial sleeve of horizontal louver and bend the louver slightly. Then remove the louver. Horizontal louver ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO Steps Procedure Indicator 3.Removal of indicator and front panel 1 Remove connection screw of indicator and then remove the indicator. Screw 2 Front Panel Assy Remove rotating shaft of front panel and then remove the front panel. 4.Removal of electric box cover 2 Screw Remove connection screws between electric box cover 2 and front case. Then remove the electric box cover 2. Electric Box Cover2 ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO Steps Procedure 5. Removal of front case 1 Remove connection screws between front case and rear case. Screw Clasp 2 Release clasp connecting front case and rear case and then remove the front case. 6. Removal of vertical louver 1 Remove 10 clasps of vertical louver and rear case assy. Clasp 2 Remove vertical louver. Vertical Louver ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO Steps Procedure 7. Removal of electric box assy 1 Indoor Temp Sensor Unplug indoor temp sensor. Electric Box Cover 2 Remove connection screws of electric box assy and rear case. Release clasps and remove connection screws of earthing wire and evaporator assy. Then remove electric box assy. 8.Removal of evaporator Electric Box Assy Pipe Clamp Auxiliary Piping 1 Turn over the rear case assy and remove connecting pipe clamp. Release clasps between connecting pipe clamp and rear case assy. Then remove connecting pipe clamp. 2 Remove connection screws of evaporator assy and motor clamp. Release clasps connecting evaporator assy to rear case. Then remove evaporator assy. Evaporator Assy ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO Steps Procedure 9.Removal of cross flow fan and motor 1 Remove screws of step motor and then remove the motor. Step Motor 2 Remove 4 connection screws of motor clamp and rear case. Then remove motor clamp. Motor Press Plat 3 Remove cross flow fan and motor. O-Gasket Sub-assy of Bearing 4 Removal of ring of bearing sub-assy. Ring of Bearing 5 Removal of connection screws connecting cross fl ow fan to motor shaft. Then remove the motor. 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