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$[LDOÀRZ ĭ $XWRPDWLF'HIURVWLQJ 7 , ,3 ;; ;; ;; 5$ ĭ ĭ $OXPLQXP)LQFRSSHU7XEH ĭ ;; $[LDOÀRZ ĭ $XWRPDWLF'HIURVWLQJ 7 , ,3 ;; ;; ;; 5$ ĭ ĭ 7KHDERYHGDWDLVVXEMHFWWRFKDQJHZLWKRXWQRWLFH3OHDVHUHIHUWRWKHQDPHSODWHRIWKHXQLW 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 2SHUDWLRQ&KDUDFWHULVWLF&XUYH 0:0<-050<&RROLQJ +HDWLQJ 11 Current (A) 9 8 7 220V 10 9 6 Current (A) 10 11 220V Conditions Indoor:DB80°F/WB66.9°F Outdoor:DB95°F/WB75°F Indoor air flow:Super High Pipe length:24.6ft 230V 5 8 7 230V 6 5 240V Conditions Indoor:DB70°F/WB60°F Outdoor:DB47°F/WB43°F Indoor air flow:Super High Pipe length:24.6ft 4 4 3 3 240V 2 2 1 1 0 0 0 10 20 30 40 50 60 70 80 0 90 10 20 30 40 50 60 70 80 90 100 110 120 Compressor speed (rps) Compressor speed (rps) 0:0<-050<+HDWLQJ 14 14 12 12 10 10 Current(A) Current(A) &RROLQJ 8 6 4 20 40 60 80 Compressor Frequency(Hz) 100 Condition Indoor:DB 70°F Indoor air flow: Super High Pipe length:24.6ft 2 0 0 0 6 4 Condition Indoor:DB 80.6°F WB66.2°F Indoor air flow: Super High Pipe length:24.6ft 2 8 120 0 20 40 60 80 100 120 Compressor Frequency(Hz) 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO &DSDFLW\9DULDWLRQ5DWLR$FFRUGLQJWR7HPSHUDWXUH &RROLQJ /RZWHPSHUDWXUHKHDWLQJ 105 110 100 100 95 90 85 Capacity ratio (%) Capacity ratio (%) 90 80 75 70 Conditions Indoor:DB80°F/WB70°F Outdoor:DB95°F/WB75°F Indoor air flow:Super High Pipe length:24.6ft 65 60 70 Conditions Indoor:DB70°F/WB60°F Outdoor:DB47°F/WB43°F Indoor air flow:Super High Pipe length:24.6ft 60 50 55 50 89.6 91.4 80 40 93.2 95 96.8 98.6 100.4 102.2 104 105.8 107.6 109.4 5 14 23 Outdoor temp.(°F) 32 41 47 50 Outdoor temp.(°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ndoor side noise when blowing Outdoor side noise when blowing 60 60 50 40 Noise/dB(A) Noice/dB(A) 50 30 20 10 0 low Middle High Super High Indoor Fan Motor Rotating Speed MWM18Y3J MWM24Y3J 40 30 20 0 20 40 60 80 100 Compressor frequency/Hz MRM18Y3J MRM24Y3J 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 2XWOLQH'LPHQVLRQ'LDJUDP ,QGRRU8QLW ' + : 0:0<5 1/2 21 2/7 7 1/5 Φ2 1/6 Φ2 1/6 1 4/7 6 1/3 2 4/5 0:0<5 1/8 27 7 3/5 Φ2 1/6 Φ2 1/6 2 2 3/4 3 1/2 8QLWLQFK 0RGHO 0:0<0:0<- 7HFKQLFDO,QIRUPDWLRQ : + ' 6HUYLFH0DQXDO 2XWGRRU8QLW 050<-050< 8QLWLQFK 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 5HIULJHUDQW6\VWHP'LDJUDP 0:0<-050<- Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Discharge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger (condenser) Liquid pipe side Valve Strainer Capillary Strainer COOLING HEATING 0:0<-050<- Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Discharge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger (condenser) Liquid pipe side Valve Strainer Electron expansion valve Strainer COOLING HEATING 5HIULJHUDQWSLSHGLDPHWHU /LTXLGĭLQFK *DVĭLQFK 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 <HOORZ*UHHQ %. %ODFN 9LROHW 2* 2UDQJH <(*1 97 *URXQGLQJZLUH 1RWH-XPSHUFDSLVXVHGWRGHWHUPLQHIDQVSHHGDQGWKHVZLQJDQJOHRIKRUL]RQWDOORYHUIRUWKLVPRGHO Ɣ,QGRRU8QLW 0:0<- 7HFKQLFDO,QIRUPDWLRQ 6HUYLFH0DQXDO 0:0<- 78%( 7(03 5220 7(03 )$102725 6(1625 6(1625 57 57 78%( 0 3* 5220 3*) 0$*1(7,& 5,1* / %8 1 %. &20287 &$3 $3 / $&/ ',63 ',63 1 <(*1 / 7(50,1$/ %/2&. <(*1 6:,1*8' / * * * * (9$325$725 (/(&75,&%2; 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SAT 5WH 6YEGN U(R) COMP V(S) 2BU 1YE MAGIC RING EH L2 W(C,T) 3RD L2 G L2 X1 RD TERMINAL BLOCK TERMINAL BLOCK 14YEGN INDOOR UNIT 7BU 2 2 3 3 8BN G 11BK L1 L2 G XT HEAT MANUAL PE (Manual Freg) MAGIC RING 17RD OVC-COMP T-SENSOR COM-INNER(1) 10BU AC-L N OFAN FA 4V INDC2 INDC1 20YEGN G VT 12WH VT L1 L2 POWER 16BU AP1 9BN G RD L1 L1 XT 15YE 13OG PFCC1 PFCC2 18YE 19YE RD 4YV 4-WAY VALVE EKV C1 CAP. M L BN FAN MOTOR YEGN REACTOR C2 CAP. 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Press this button again to clear the display. 18 TEMP icon:Pressing TEMP button, (set temperature), (indoor ambient temperature), (outdoor ambient temperature) and blank is displayed circularly. 19 AIR SWEEP icon: ,QWURGXFWLRQIRU,FRQVRQ 'LVSOD\6FUHHQ 27 20 LIGHT icon: 26 21 LOCK icon: 24 23 22 17 18 19 20 is displayed by pressing the LIGHT button. Press LIGHT button again to clear the display. 25 16 is displayed when pressing the AIR SWEEP button.Press this button again to clear the display. 21 is displayed by pressing “ ” and “ ” buttons simultaneously. Press them again to clear the display. 22 SET TIME display:After pressing TIMER button, ON or OFF will blink.This area will show the set time. 23 TURBO icon: is displayed when pressing the TURBO button.Press this button again to clear the display. 24 DIGITAL display:This area will show the set temperature. 25 SENSOR icon: is displayed when pressing the SENSOR button. Press this button again to clear the display. 26 FAN SPEED 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. 27 EXTEND icon: is displayed when pressing the EXTEND button. 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ZKHWKHUWKHWKHUPDOJUHDVHRQ ,300RGXOHRIRXWGRRUFRQWURO SDQHO$3LVVXI¿FLHQWDQGZKHWKHU WKHUDGLDWRULVLQVHUWHGWLJKWO\ ,ILWVQRXVHSOHDVHUHSODFHFRQWURO SDQHO$3 6XSSO\YROWDJHLVORZHUWKDQ $&9 :LULQJWHUPLQDO9LVORRVHQHGRU EURNHQ 9LVGDPDJHGSOHDVHUHSODFH 9 5HSODFHRXWGRRUFRQWUROSDQHO$3 3RRUDLUUHWXUQLQLQGRRUXQLWRUIDQ VSHHGLVWRRORZ ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO +RZWR&KHFN6LPSO\WKH0DLQ3DUW ,QGRRUXQLW 7HPSHUDWXUHVHQVRUPDOIXQFWLRQ Start Is the wiring terminal between temperature sensor and the controller loosened or poor ly 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 temperature 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 -XPSHUFDSPDOIXQFWLRQ & Possible causes: 1. There is no jumper cap on the controller; 2. Jumper cap is not inserted properly and tightly; 3. Jumper cap is damaged; 4. Controller is damaged. chart below: See the C5 is displayed on the unit. Is there jumper cap on the controller? Yes No Install a matching jumper cap. Is the malfunction eliminated? No Is the jumper cap inserted incorrectly or improperly? No No Yes Re-insert the jumper cap Is the malfunction eliminated? Yes Replace the jumper cap Is the malfunction eliminated? Yes No The mainboard is defined abnormal replace it End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 2YHUFXUUHQWSURWHFWLRQ ( Start Is the supply voltage unstable with big fluctuation? yes no Is the supply voltage too low with overload? Normal fluctuation is within 10% of the rated voltage on the nameplate Malfunction is eliminated. yes no yes Adjust the supply voltage to maintain it within normal range Malfunction is eliminated. yes no no Is the indoor / outdoor heat exchanger too dirty, or are the air inlet and outlet blocked? yes yes yes Check the motor and reinstall the motor to have the fan run normally Malfunction is eliminated. yes no no Measure the current of live wire on the main board with a clamp ampere meter. Is the current higher than the value of the overcurrent protection? Malfunction is eliminated. no no Is the fan motor running abnormally; is the fan speed too low or does it fail to run? Clean the indoor and outdoor heat exchangers and remove the blockage of air inlet and outlet no Replace the controller Malfunction is eliminated. yes yes no Is there blockage inside the system? (Filth blockage, ice plug, greasy blockage, the Y-valve hasn’ t been opened completely) yes Flush the heat exchangers with high pressure nitrogen Malfunction is eliminated. yes no no Is the compressor running abnormally? Is there abnormal sound or oil leakage; is the temperature of the shell too high, etc.? no yes Replace the compressor Malfunction is eliminated. yes no Replace the control panel End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 2XWGRRUXQLW .H\GHWHFWLRQSRLQW Test 9 Test 3 Test 4 Test 2 C Test 1 L H F G D B A E J I K Test 5 Test 7 Test 8 Test 6 Test 12 Test 10 S M N T Test 14 Test 11 Test 13 ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO Ɣ'LVFKDUJLQJPHWKRG UHPRYHWKHLQYHUWHUFRYHU 2XWGRRU8QLW ,QYHUWHUFRYHU 3&ERDUG 6ROGHUHGVXUIDFH $VVKRZQEHORZFRQQHFWWKHGLVFKDUJHUHVLVWDQFH DSSUR[ȍ: RUSOXJRIWKHVROGHULQJLURQWRYROWDJHEHWZHHQWHUPLQDOVRI WKHHOHFWURO\WLFFDSDFLWRU WHVW³'´DQG³(´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Ɣ'HWHFWLIWKHYROWDJHRI/DQG1WHUPLQDORIZLULQJERDUGLVEHWZHHQ$&$&E\DOWHUQDWLQJYROWDJHPHWHU Ɣ,VUHDFWRU / ZHOOFRQQHFWHG",VFRQQHFWLRQZLUHORRVHQHGRUSXOORXW",VUHDFWRU / GDPDJHG" 0DOIXQFWLRQGLDJQRVLVSURFHVV Turn on the unit and wait 1 minute Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor Voltage higher than 200V? Y Fault with the voltage testing circuit on control panel AP1 Replace the control panel AP1 N Measure the AC voltage between terminalL and N on wiring board XT(power supply) Voltage within 210VAC~250VAC? N Shut down the power and repair the power supply to restore the range 210VAC~250VAC power on and restart the unit If the fault is eliminated? Y Y or Shut down the power and wait 20nutes; mi use DC voltmeter to measure the voltage on the two ends of capacitor (test3), until the voltage is lower than 20V N Check the connection of reactor (L in the Electrical Wiring Diagram) If the wiring of reactor Lis normal? N Connect the reactor Laccording to Electrical Wiring Diagram correctly Re-energize and turn on the unit If the fault is eliminated? Y Y Replace the control panel AP1 N End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO ,30SURWHFWLRQGHV\QFKURQL]LQJPDOIXQFWLRQSKDVHFXUUHQWRIFRPSUHVVRULVRYHUFXUUHQW $3EHORZ LVFRQWUROERDUGRIRXWGRRUXQLW 0DLQGHWHFWLRQSRLQW Ɣ,IFRQWUROERDUG$3DQGFRPSUHVVRU&203LVZHOOFRQQHFWHG",IWKH\DUHORRVHQHG",IWKHFRQQHFWLRQVHTXHQFHLV FRUUHFW" Ɣ,VYROWDJHLQSXWLQWKHQRUPDOUDQJH 7HVWWKHYROWDJHEHWZHHQ/1RIZLULQJERDUG;7E\'&YROWDJHPHWHU " Ɣ,IFRLOUHVLVWDQFHRIFRPSUHVVRULVQRUPDO",VFRPSUHVVRUFRLOLQVXODWLQJWRFRSSHUSLSHZHOO" Ɣ,IWKHZRUNORDGRIXQLWLVKHDY\",IUDGLDWLQJRIXQLWLVZHOO" Ɣ,IWKHUHIULJHUDQWFKDUJLQJLVDSSURSULDWH" 0DOIXQFWLRQGLDJQRVLVSURFHVV Energize and switch on IPM protection occurs after the machine has run for a period of time? Y Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) If the voltage between terminal L and N on wiring board XT is within 210VAC~250VAC? N Check the supply voltage and restore it to 210VAC~250VAC Y Restart the unit. Before protection occurs, use DC voltmeter to measure the voltage between the two ends of electrolytic capacitor on control panel AP1 Voltage between the two ends of celectrolytic capacitor is higher than 250V Y Please confirm: 1. If the indoor and outdoor heat exchangers are dirty? If they are obstructed by other objects which affect the heat exchange of indoor and outdoor unit. 2. If the indoor and outdoor fans are working normally? 3. If the environment temperature is too high, resulting in that the system pressure is too high and exceeds the permissible range? 4. If the charge volume of refrigerant is too much, resulting in that the system pressure is too high? 5. Other conditions resulting in that the system pressure becomes too high. The connection of capacitor C2 is loose. Reconnect the capacitor C2 according to Electrical Wiring Diagram. Then, Restart the unit. Y N Stop the unit and disconnect the power supply. Wait 20 minutes, or use DC voltmeter to measure the voltage between the two ends of capacitor C2, until the voltage is lower than 20V Remove the wires on the two ends of capacitor C2. Then, use capacitance meter to measure the capacitor C2. Verify as per the Parameters Sheet. If capacitor C2 is failed? Replace the capacitor C2. Then, energize and start the unit. Y Replace the control panel AP1 N If there is any abnormality described above? Y Y Take corrective actions according to Technical Service Manual, and then energize and start the unit. Connect the control panel AP1 and compressor COMP correctly according to the Electrical Wiring Diagram. Then, energize and start the unit. If the resistance is normal? N N If the unit can work normallv? If the unit can work normally? Y Y N Replace the control panel AP1 N Use ohmmeter to measure the resistance between the three terminals on compressor COMP, and compare the measurements with the compressor resistance on Service Manual. Y N Stop the unit and disconnect the power supply. Then, check the connection of capacitor C2 according to Electrical Wiring Diagram. Refer to the Electrical Wiring Diagram and check if the connection between AP1 and COMP is loose and if the connection order is correct. If the connection between AP1 and COMP is unsecure or the connection order is wrong? If the unit can work normally? N If the unit can work normally? If the unit can work normally? Y N Y Replace the compressor COMP N Use ohmmeter to measure the resistance between the two terminals of compressor COMP and copper tube. Resistance higher than 500MΩ? Y Replace the control panel AP1 END ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 'LDJQRVLVIRUDQWLKLJKWHPSHUDWXUHRYHUORDGSURWHFWLRQ $3EHORZLVFRQWUROERDUGRIRXWGRRUXQLW 0DLQGHWHFWLRQSRLQW Ɣ,IWKHRXWGRRUDPELHQWWHPSHUDWXUHLVLQQRUPDOUDQJH Ɣ,IWKHLQGRRUDQGRXWGRRUIDQLVUXQQLQJQRUPDO Ɣ,IWKHUDGLDWLQJHQYLURQPHQWRILQGRRUDQGRXWGRRUXQLWLVZHOO 0DOIXQFWLRQGLDJQRVLVSURFHVV Anti-high temperature, overload protection If the outdoor ambient temperature is higher than 53 ºC? Y Normal protection, please use it after improve the outdoor ambient temperature N After the unit deenergized for 20min If the radiating of outdoor and indoor unit is well? Y Improve the radiating environment of unit N If the indoor and outdoor fan work well? N 1. Check if fan terminal OFAN is connected well 2. Test if resistance value of any two terminals is less than 1k with ohmic meter Y Replace control board AP1 Replace fan capacitor C1 Replace outdoor fan End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 'LDJQRVLVIRUIDLOXUHVWDUWXSPDOIXQFWLRQ $3EHORZLVFRQWUROERDUGRIRXWGRRUXQLW 0DLQGHWHFWLRQSRLQW Ɣ,IWKHFRPSUHVVRUZLULQJLVFRUUHFW" Ɣ,IWKHVWRSWLPHRIFRPSUHVVRULVHQRXJK" Ɣ,IWKHFRPSUHVVRULVGDPDJHG" Ɣ,IWKHUHIULJHUDQWFKDUJLQJLVWRRPXFK" 0DOIXQFWLRQGLDJQRVLVSURFHVV Energize the unit and start it If the stop time of compressor is more than 3min? If the stop time is not enough and the high and low pressure of system is not balance , please start it after 3min N Y If the compressor wire COMP(UVW) is well connected and connection sequence is correct Improve the connection situation of control board AP1 and compressor COMP, connect it with wiring diagram N Y Does the unit start up normally? If the refrigerant charging is too much? N Y Charge the refrigerant according to service manual Does the unit start up normally? Y N Replace control board AP1 If malfunction is removed? N Replace the compressor End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 'LDJQRVLVIRUFRPSUHVVRUV\QFKURQLVP $3EHORZLVFRQWUROERDUGRIRXWGRRUXQLW 0DLQGHWHFWLRQSRLQW Ɣ,IWKHV\VWHPSUHVVXUHLVRYHUKLJK" Ɣ,IWKHZRUNYROWDJHLVRYHUORZ" 0DOIXQFWLRQGLDJQRVLVSURFHVV Synchronism after energize the unit and start it Synchronism occurred during operation If the stop time of compressor is more than 3min If the outdoor fan works normally? N N Check if the fan terminal OFAN is connected well Replace fan capacitor C1 Y Y If the radiating of unit is well? If the compressor wire COMP(UVW) is well connected, the connection sequence forwards to clockwise direction? N Connect wire well Y Replace control board AP1 Y Y Improve the radiating of unit (clean heat exchanger and increase ventilation) N Start to run until the power resume normal voltage Replace outdoor fan N If the input voltage of unit is normal? Y If the refrigerant is too much? Remove malfunction? N N Replace control board AP1 Charge the refrigerant with service manual Y Replace compressor Remove malfunction? End N Y Replace compressor End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 'LDJQRVLVIRURYHUORDGDQGGLVFKDUJHPDOIXQFWLRQ $3EHORZLVFRQWUROERDUGRIRXWGRRUXQLW 0DLQGHWHFWLRQSRLQW Ɣ,IWKHHOHFWURQH[SDQVLRQYDOYHLVFRQQHFWHGZHOO",VWKHH[SDQVLRQYDOYHGDPDJHG" Ɣ,IWKHUHIULJHUDQWLVOHDNDJH" Ɣ,IWKHRYHUORDGSURWHFWRULVGDPDJHG" 0DOIXQFWLRQGLDJQRVLVSURFHVV After the unit de-energized for 20min If the overload protector SAT is well connected? N Y Under ambient temperature, test the resistance of overload protector with ohmic Y N If the wiring terminal FA of electron expansion is well connected? N Connect wire well with wiring diagram Y The resistance value of firs t 4 l e ad fo ot an d th e fif th lead fo ot is similar, less than 100 Replace overload protector SAT Replace EKV coil of electron expansion valve Remove malfunction? N Check refrigerant, if there is leakage, please refer to specification Remove malfunction? Y N Replace control board AP1 End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO 3)& FRUUHFWLRQIRUSRZHUIDFWRU PDOIXQFWLRQ RXWGRRUXQLWPDOIXQFWLRQ $3EHORZLVFRQWUROERDUGRIRXWGRRUXQLW 0DLQGHWHFWLRQSRLQW Ɣ&KHFNLIUHDFWRU / RIRXWGRRUXQLWDQG3)&FDSDFLW\DUHGDPDJHG 0DOIXQFWLRQGLDJQRVLVSURFHVV Start Check the connection wire of reactor (L) of outdoor unit and PFC capacity If there is damaged short circuit Y Replace connection wire with circuit diagram If the malfunction is removed? N Remove PFC capacity and test resistance of two terminals N If the resistance value is 0 Y Capacity is short circuit and replace it Re-energize the unit and start it If the malfunction is removed? Y If the malfunction is removed? Y N Cut the terminal of reactor, test the resistance between two terminals of reactor with ohmic meter If there is damaged short circuit N Y Replace the reactor Reenergize the unit and start it N Replace control board AP1 N Y End ,QVWDOODWLRQDQG0DLQWHQDQFH 6HUYLFH0DQXDO &RPPXQLFDWLRQPDOIXQFWLRQ $3EHORZLVFRQWUROERDUGRIRXWGRRUXQLW 0DLQGHWHFWLRQSRLQW Ɣ&KHFNLIWKHFRQQHFWLRQZLUHDQGWKHEXLOWLQZLULQJRILQGRRUDQGRXWGRRUXQLWLVFRQQHFWHGZHOODQGQRGDPDJHG Ɣ ,I WKH FRPPXQLFDWLRQ FLUFXLW RI LQGRRU PDLQERDUG LV GDPDJHG" ,I WKH FRPPXQLFDWLRQ FLUFXLW RI RXWGRRU PDLQERDUG $3 LV GDPDJHG" 0DOIXQFWLRQGLDJQRVLVSURFHVV Start If the unit is operation normal before malfunction N Y Check connection wire of indoor and outdoor unit with circuit diagram Check builtin wiring of indoor and outdoor unit Y N Connection correct? N Malfunction of circuit is detected with control board AP1 voltage Y Check connection wire of indoor and outdoor unit with circuit diagram If the wiring is damaged? N If the malfunction is removed? N Check communication circuit of outdoor unit If the malfunction is removed? Problem of communication circuit Y Replace outdoor mainboard AP11 If the malfunction is removed? 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