Service Diagnosis
8.4.10 The communication fault between indoor and outdoor
Indoor display E7
outdoor display LED1 flash
15 times
Method of
Communication is detected by checking the indoor PCB and the outdoor PCB
Malfunction
Detection
Malfunction
Ŷ
The outdoor PCB broken leads to communication fault
Decision
Ŷ
The indoor PCB broken leads to communication fault
Conditions
Supposed
Ŷ
Communication wiring disconnected
Causes
Ŷ
The indoor PCB is broken
Ŷ
The outdoor PCB is broken
Ŷ
The Module PCB is broken
Troubleshooting
* Caution
Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
NO
˄
A
˅
Yes
NO
Yes
No
YES
Restart the a/c and it
becomes normally.
If starting up normally, but
malfunction occurs again after a
while
Check whether the linking cable
between the indoor and outdoor is well
connected or whether its core wires are
well insulated.
The outdoor mainboard needs
dehumidification.
The outdoor mainboard needs
dedust.
1. Reconnect the linking cable;
2. Replace the linking cable with new
one.
76
Domestic Air Conditioner
YJHJZH018BARRAFX
-SM
Содержание YJHJXH018BARR-FX
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Страница 54: ...WARNING CAUTION Installation Domestic air conditioner 52 Safety Precautions YJHJZH018BARRAFX SM ...
Страница 55: ...Installation Domestic Air Conditioner 53 Safety Precautions YJHJZH018BARRAFX SM ...
Страница 57: ...Installation 55 Domestic Air Conditioner Safety Precautions YJHJZH018BARRAFX SM ...
Страница 58: ...Installation Domestic Air Conditioner 56 Read Before Installation YJHJZH018BARRAFX SM ...
Страница 59: ...Installation Domestic Air Conditioner 57 Read Before Installation YJHJZH018BARRAFX SM ...
Страница 60: ...Installation Domestic Air Conditioner 58 Read Before Installation YJHJZH018BARRAFX SM ...
Страница 63: ...Installation Domestic Air Conditioner 61 Installation Procedure Air Tightness Test YJHJZH018BARRAFX SM ...
Страница 64: ... e g 1U18EN2ERA Installation Domestic air conditioner 62 YJHJZH018BARRAFX SM ...
Страница 82: ...Removal Procedure Removal of indoorunit 80 Domestic Air Conditioner YJHJZH018BARRAFX SM ...
Страница 83: ...81 Domestic Air Condiioner YJHJZH018BARRAFX SM ...
Страница 85: ...three two Removal Procedure HOOKS 83 Domestic Air Conditioner YJHJZH018BARRAFX SM ...
Страница 86: ...flap flap flap flap Removal Procedure 84 Domestic Air Conditioner YJHJZH018BARRAFX SM ...
Страница 87: ...Removal Procedure 85 Domestic Air Conditioner YJHJZH018BARRAFX SM ...
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Страница 105: ...103 Domestic air conditioner Removal of procedure s t n i o P e r u d e c o r P p e t S 3 YJHJZH018BARRAFX SM ...
Страница 112: ...The end Sincere Forever YJHJZH018BARRAFX SM ...