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Page 1: ...Read this manual before installation and operation Make sure that it is well kept for later reference SERVICE MANUAL Mini Split Air Conditioner YEHJZH018 24BAMTAFX ...

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Page 10: ...gth 5m Conditions Indoor DB21 1 C WB15 6 C Outdoor DB8 33 C WB6 11 C Indoor air flow Turbo Pipe length 5m 220V 230V 240V 220V 230V 240V 0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120 110 80 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e r r u C 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e r r u C Conditions Indoor DB26 7 C WB19 4 C Outdoor DB35 C WB23 9 C Indoor a...

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Page 12: ...UYH 7DEOHV IRU RWK 0RGHOV 20 30 40 50 60 20 0 40 60 80 100 Indoor side noise when blowing Outdoor side noise Compressor frequency Hz A B d e s i o N 18K 24K 18K 24K 60 50 40 30 20 10 0 Indoor Fan Motor Rotating Speed Noice dB A low Middle High Super High ...

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Page 15: ...FH 0DQXDO Indoor unit Outdoor unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Capillary Strainer 5HIULJHUDQW 6 VWHP LDJUDP ...

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Page 20: ... TIMER ON TIMER OFF Button X FAN Button TEMP Button LIGHT Button SLEEP Button CLOCK Button TURBO Button Button 2 6 8 3 9 10 7 5 12 11 4 1 Operation mode Temp display type 21 2 XWWRQ 3UHVV WKLV EXWWRQ FDQ WXUQ RQ RU WXUQ RII WKH DLU FRQGLWLRQHU IWHU WXUQLQJ RQ WKH DLU FRQGLWLRQHU RSHUDWLRQ LQGLFDWRU RQ LQGRRU XQLW V GLVSOD LV 21 JUHHQ LQGLFDWRU 7KH FRORXU LV GLIIHUHQW IRU GLIIHUHQW PRGHOV DQG LQGRR...

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Page 24: ...play Press it to start or stop operation ON OFF MODE Press it to select operation mode AUTO COOL DRY FAN HEAT Press it to increase temperature setting FAN Press it set swing angle TIMER ON SWING TIMER OFF CLOCK X FAN LIGHT TEMP TURBO SLEEP Press it to set fan speed Press it to set auto off timer Press it to set auto on timer Press it set clock 1 14 Press it to set HEALTH or AIR function 15 I FEEL ...

Page 25: ...TEMP and CLOCK simulta neously in Heat mode 8ć Heatingicon 30 Remote Controller Description ON OFF MODE 1 3 2 Press this button to turn on the unit Press this button again to turn off the unit Press this button to increase set temperature Holding it down above 2 seconds rapidly increases set temperature In AUTO mode set temperature is not adjustable Each time you press this button a mode is select...

Page 26: ...ilable in AUTO FAN or HEAT mode function turn on the display s light and press this button again to turn off the display s Press this button to activate deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time In high fan speed is displayed If the light is turned off COOL mode the unit will blow strong cooling air at super high fan speed In HEAT mod...

Page 27: ...ot operate normally please take the batteries out and reinsert them after 30 seconds If it still can t operate properly Notes replace the batteries Sketch map for replacing batteries Replacement of Batteries About Back lighting Function 20 Press TEMP and CLOCK simultaneously in COOL SE Repeat the operation to quit the function mode to start energy saving function Nixie tube on the remote controlle...

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Page 39: ... 15cm Above 15cm Above 50cm Above 50cm Above 30cm Above 200cm Above 30cm Above 15cm Above 300 cm 250 cm Space to the obstruction Air outlet side Space to the wall Air inlet side The dimensions of the space necessary for proper installation of the unit include the minimum permissible distances to adjacent parts Schematic diagram being reference only outdoor unit is with variation please refer to re...

Page 40: ...or unit Make the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installation Note this flow is only for reference please find the more detailed installation steps in this section Select outdoor unit installation location Install the support of outdoor unit select it accord...

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Page 46: ...DO Malfunction of zero cross derection U8 Off 3s and blink 17 times The complete unit stops 1 Power supply is abnormal 2 Detection circuit of indoor control mainboard is abnormal 13 0DLQWHQDQFH ODVKLQJ RI QGRRU 2XWGRRU 8QLW DQG 3ULPDU XGJHPHQW ...

Page 47: ...DO It s the normal state Off 3s and blink once during blinking ON 10s and Off 05s Defrosting will occur in heating mode Compressor will operate while indoor fan will stop Complete unit current detection malfunction Off 3s and blink 13 times U5 ...

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Page 49: ... QVWDOODWLRQ DQG 0DLQWHQDQFH 6HUYLFH 0DQXDO Test1 Test2 Test3 Test5 Test9 Test6 Test7 Tset8 Test4 Test12 Test10 Test13 Test11 Key test point bottom ...

Page 50: ...D V 5 1 e l u d o m M P I 0 1 D Test 6 Both ends of electrolytic Both ends of electrolytic Both ends of electrolytic capacitor C40 V 3 1 V 2 1 C D r e w o p V 2 1 0 4 C Test 7 capacitor C82 V 5 C D r e w o p V 5 2 8 C Test 8 capacitor C225 V 3 3 C D r e w o p V 3 3 5 2 2 C Test 9 Between S and T Communication circular current DC 56V Test 10 Between point N and GND R78 to N terminal ground signal r...

Page 51: ...F VKRFN RU EURNLQJ WKH FRQWURO ERDUG Malfunction indicator of outdoor unit 7 ZLUH N Y N Y N Y N Y N Y Turn on the unit and wait 1 minute Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor test 8 Voltage higher than 200V Fault with the voltage testing circuit on control panel AP1 Replace the control panel AP1 Measure the AC voltage between terminalL andN on wiring boa...

Page 52: ...or use DC voltmeter to measure the voltage between the two ends of capacitor C2 until the voltage is lower than 20V Replace the capacitor C2 Then energize and start the unit Replace the control panel AP1 Take corrective actions according to Technical Service Manual and then energize and start the unit If there is any abnormality described above Replace the control panel AP1 If the connection betwe...

Page 53: ...ion of the indoor unit and outdoor unit abnormal Improve the heat dissipation environment of the unit Does the indoor and outdoor fan work normally Replace the outdoor fan End Replace the fan capacitor C1 1 Check if the fan terminal OFAN is connected correctly 2 If the indoor and outdoor motor is broken Check if the temperature sensor is normal according to the Resistance Table of Tube Temperature...

Page 54: ...the wires for the compressor UVW connected correctly Is connection sequence right Is the charge volume of refrigerant too much Connect the wires between control panel AP1 and compressor as per the wiring diagram Does the unit start up normally Charge refrigerant according to the service manual Does the unit start up normally Replace the control panel AP1 End If the fault is eliminated Replace the ...

Page 55: ... the wires correctly Replace the control panel AP1 Is the input voltage normal Replace the control panel AP1 Is heat dissipation of the unit abnormal Is the charge volume of refrigerant too much Replace the compressor End End Replace the compressor Are the wires for the compressor connected correctly Is the connection made in clockwise direction If the fault is eliminated If the fault is eliminate...

Page 56: ...heck if the resistance of overload protector is less than 1000ohm in ambient temp Connect the wires correctly according to wiring diagram Is the terminal FA of the electronic expansion valve connected correctly Replace the overload protector SAT Check if the coil of electronic expansion valve is installed correctly on the valve Check if the electronic expansion valve is blocked Check if the refrig...

Page 57: ...ts according to the wiring diagram Is the connection right Correctly connect the corresponding wires for the indoor and outdoor units according to the wiring diagram Correctly connect the wires for the indoor and outdoor units according to the wiring diagram The communication circuit is abnormal Replace the mainboard of indoor unit Replace the mainboard AP1 of outdoor unit Check if the controller ...

Page 58: ...nging Test the voltage of Test 13 Test the voltage of Test 11 Test the voltage of Test 12 The value is changing The value is changing The value is changing Detection process of outdoor communication circuit refer to the outdoor key detection points End Fault of outdoor unit Outdoor communication circuit is normal ...

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Page 66: ...2013 Johnson Controls Inc www johnsoncontrols com Doc Johnson Controls reserve the right to change product features without prior notice MUHJZHAMQ 130508 ...

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