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Indoor Malfunction
Outdoor
Malfunction
10.3.1 Thermistor or Related Abnormality
Indoor Display
E1: Room temperature sensor failure
E2: Heat-exchange sensor failure
outdoor display
LED1 flash 10 times Defrost temperature sensor failure
LED1 flash 11 times Suction temperature sensor failure
LED1 flash 12 times Ambient temperature sensor failure
LED1 flash 13 times Discharge temperature sensor failure
Method of
The temperatures detected by the thermistors are used to determine thermistor errors
Malfunction
Detection
Malfunction
when the thermistor input is more than 4.92V or less than 0.08V during compressor
D
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c
s i
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p
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t a
Conditions
Note: The values vary slightly in some models
Supposed
Causes
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector, or else
E2
--
E
4
- -
E14
--
F
1
2
1
F1
2
F22
3
F3
4
F19
6
F4
8
F
8
9
F21
10
F7
11
F6
12
F25
13
F11
18
F28
19
F2
24
F23
25
o i
. n
Faulty connector connection
Faulty thermistor
Faulty PCB
parts damage may be occurred.
Heat-exchange sensor failure
n I
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E
E
P
R
O
M
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r r
r o
Indoor fan motor malfunction
O
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E
E
P
R
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M
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r r
T
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p
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t c
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f o
P I
M
Overcurrent
protection of
for the outdoor model
Communication fault between the IPM and
outdoor PCB
Power voltage is too high or low
Overheat protection for Discharge
temperature
O
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r o
D
C
a f
n
m
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r o
a f
Defrost temperature sensor failure
Suction temperature sensor failure
Ambient temperature sensor failure
Discharge temperature sensor failure
deviate from the normal for the compressor
Loop of the station detect error
Overcurrent of the compressor
Overcurrent protection for single-phase of the
compressor
35
Connector Wiring Diagram
r o
AC electricity
u
t l
Domestic Air Conditioner
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