Connector Wiring Diagram
Domestic Air Conditioner
3
5
1
0
.3.1 Thermistor or Related Abnormality
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
.
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Conditions
Note: The values vary slightly in some models
Supposed
■
Faulty connector connection
Causes
■
Faulty thermistor
■
Faulty PCB
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else
parts damage may be occurred.
Indoor and
Outdoor
E7
■ ■ ★
15
Communication fault between indoor
and outdoor units
Indoor
Malfunction
E1
★ ■ ■
--
Room temperature sensor failure
E2
★ □ □
--
Heat-exchange sensor failure
E4
★ □ ★
--
Indoor EEPROM error
E14
■ □ ★
--
Indoor fan motor malfunction
Outdoor
Malfunction
F12
■ ★ ■
1
Outdoor EEPROM error
F1
□ ★ ★
2
The protection of IPM
F22
★ ★ ■
3
Overcurrent protection of AC
electricity for the outdoor model
F3
■ ★ ■
4
Communication fault between the IPM
and outdoor PCB
F19
■ ★ □
6
Power voltage is too high or low
F4
■ ★ ■
8
Overheat protection for Discharge
temperature
F21
□ □ ★
10
Defrost temperature sensor failure
F7
■ ★ ■
11
Suction temperature sensor failure
F6
□ ★ ■
12
Ambient temperature sensor failure
F25
★ □ ■
13
Discharge temperature sensor failure
F11
■ ★ ■
18
deviate from the normal for the
compressor
F28
■ ★ ■
19
Loop of the station detect error
F2
■ ★ □
24
Overcurrent of the compressor
F23
■ ★ □
25
Overcurrent protection for single-phase
of the compressor
