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.3.11 Loss of synchronism detection
Inverter side current detection is abnormal
Outdoor Display
LED1
flash 18 times
LED1
flash 19 times
Method of
The position of the compressor rotor can not detected normally
Malfunction
Detection
Malfunction
when the wiring of compressor is wrong or the connection is poor;
Decision
or the compressor
is damaged
Conditions
Supposed
Ƶ
Faulty
The wiring of compressor
Causes
Ƶ
Faulty
compressor
Ƶ
Faulty
PCB
Troubleshooting
* Caution
Be sure to turn off power switch before connect or disconnect connector, or parts
damage may be occurred.
Turn on the unit.
Check whether the compressor can start?
1. The wiring of compressor is incorrect
or the connection is poor;
2. The compressor is damaged
Firstly, the compressor start up ,soon the
compressor stopped with the LED1 on the
outdoor PCB blinks
˄
1Hz
˅
19/18 times
The power module is fault, replace a new
one
the
Malfunctions
exist
also,
the
compressor is damaged replace a
new one
YES
NO
YES
Malfunction unsolved
Seivice diagnosis
Domestic air conditioner
4
4
Содержание 1U24SE3ERA
Страница 12: ...Operation range Domestic air conditioner 5 Operation range 12 10 0 20 16 32 10 20 15 ...
Страница 15: ...Connector Wiring Diagram PCB 2 CN4 CN9 CN8 CN3 CN5 CN6 CN7 CN1 CN2 CN10 CN11 Domestic air conditioner 15 ...
Страница 55: ...Circuit diagrams 63 Domestic air conditioner ...
Страница 56: ...Circuit diagrams Domestic air conditioner 12 2 Module board Circuit Diagram 64 ...