Haier 2HUM18HC03/R2 - Loss of Synchronism Detection

2HUM18HC03/R2(DB)-SM Wiring diagrams
62
Domestic air conditioner
7.3.11 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 Ŷ
Faulty The wiring of compressor
Causes Ŷ 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.
Within 3 minutes after the machine is
supplied with power and turned on with
the remote controller,check whethe
r
the compressor can stard up
1. The wiring of compressor is incorrect
or the connection is poor;
2. The compressor is damaged
At frist, the compressor start up ,soon the
compressor stopped with the LED1 on the
outdoor PCB blinks˄1Hz˅19/18 times
IPM Module is damaged and needs
replacing.
the Malfunctions exist also, the
compressor is damaged replace a
new one
YES
NO
YES
Malfunction unsolved
Maybe there is some disturbance