Haier N Series Service Manual page 30
Wall mounted type
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Also See for N Series:
- Service manual (96 pages) ,
- Service manual (53 pages) ,
- Service manual (45 pages)
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10.4Codes and Description
10.4.1.Problem Symptoms and Measures
Symptom
None of the units
Check the power supply.
operates
Check the indoor PCB
Equipment
operates but does
Diagnosis
not cool, or does
port
not heat (only for
operating current.
heat pump)
Large
operating
Check the installation
noise
and
condition.
vibrations
10.4.2 Error Codes and Description indoor display
Indoor Malfunction
The code indication that is listed above is the main fault
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage
may be occurred.
10.4.2.1 Thermistor or Related Abnormality
Indoor Display
E1: Room temperature sensor failure
E2: Heat-exchange sensor failure
Method of
Method of
Method of
The temperatures detected by the thermistors are used to determine thermistor errors
Malfunction
Malfunction
Malfunction
Detection
Detection
Detection
Malfunction
Malfunction
Malfunction
when the thermistor input is more than 4.92V or less than 0.08V during compressor
D
c e
s i
o i
n
Detection
D
c e
s i
o i
n
o
p
r e
t a
o i
Conditions
Conditions
Conditions
Note: The values vary slightly in some models
Faulty connector connection
Supposed
Faulty thermistor
Supposed
Supposed
Causes
Faulty PCB
Causes
Causes
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector,
Troubleshooting
All manuals and user guides at all-guides.com
Check Item
Check to make sure that the rated voltage is
supplied.
Check to make sure that the indoor PCB is broken
by
service
pressure
and
Check for insufficient gas.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.) are
provided.
Code indication
indoor
E1
Room temperature sensor failure
E
2
H
e
t a
e -
E
4
n I
d
o
r o
E
1
4
n I
d
o
r o
. n
or parts damage may be occurred.
28
Details of Measure
Description
c x
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e
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e r
E
E
P
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r r
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t o
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c
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n
Service diagnosis
Reference
Page
28
2
8
2
9
3
0
Domestic air conditioner
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