Haier 1U50JECFRA-3 Service Manual page 45
Outdoor unit dc inverter
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Also See for 1U50JECFRA-3:
- Service manual (537 pages) ,
- Installation manual (320 pages) ,
- Installation manual (34 pages)
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10.3.10 The communication fault between indoor and outdoor
Indoor display
outdoor display
LED1 flash 15 times
Method of
Communication is detected by checking the indoor PCB and the outdoor PCB.
Malfunction
Detection
Malfunction
Decision
The indoor PCB broken leads to communication fault.
Conditions
Supposed
Causes
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector, or else
E7
The outdoor PCB broken leads to communication fault.
Communication wiring disconnected.
The indoor PCB is broken.
The outdoor PCB is broken.
The Module PCB is broken.
parts damage may be occurred.
43
Service diagnosis
Domestic air conditioner
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