Service Diagnosis - Haier N Series Service Manual
Wall mounted type
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- Service manual (96 pages) ,
- Service manual (61 pages) ,
- Service manual (45 pages)
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10 Service Diagnosis
10.1 Caution for Diagnosis
The operation lamp flashes when any of the following errors is detected.
1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling
equipment operation.
2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic
procedure described in the following pages.
10.2 Parameter of primary electronic appliance
10.3.Problem Symptoms and Measures
Symptom
None of the units
operates
Equipment operates but
does not cool, or does not
heat (only for heat pump)
Large operating noise and
vibrations
10.4 Error Codes and Description indoor display
Indoor Malfunction
The code indication that is listed above is the main fault
Check Item
Check the power supply.
Check the indoor PCB
Diagnosis
by
service
pressure and operating current.
Check the installation condition.
Code indication
indoor
E
1
R
o
o
E
2
H
e
t a
E
4
n I
d
E
1
4
n I
d
28
Details of Measure
Check to make sure that the rated voltage is supplied.
Check to make sure that the indoor PCB is broken
port
Check for insufficient gas.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.) are
provided.
Description
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Reference
Page
29
29
30
3
0
Domestic air conditioner
n
o
s
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