Haier H2SM-(9+12)HEK03/R2 User Manual

H2SM-(9+12)HEK03/R2
Service Diagnosis
Domestic Air Conditioner
52
7.4.4 Communication fault between indoor and outdoor system
Indoor Display E7
Method of Malfunction
Detection
Communication is detected by checking the indoor board and outdoor board
Malfunction Decision
Conditions

The outdoor PCB broken leads to communication fault

The indoor PCB broken leads to communication fault
Supposed Causes

The outdoor PCB is broken

The indoor PCB is broken

Communication wiring disconnected
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* Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may
be occurred.

Haier H2SM-(9+12)HEK03/R2 Specifications

General

Brand	Haier
Model	H2SM-(9+12)HEK03/R2
Category	Air Conditioner
Language	English