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Outdoor Unit Troubleshooting
Indoor and
E7
Outdoor
E1
Indoor
E2
Malfunction
E4
E14
E5
E9
F12
F1
F22
F3
F20
F19
F27
F4
F8
F21
F7
Outdoor
Malfunction
F6
F25
F13
F14
F11
F28
F15
F2
F23
F9
F24
F34
F35
F43
Code indication
Indoor displaying
panel code indication
Directly display
Directly display
Directly display
Directly display
Directly display
Trouble record
Trouble record
Directly display
Directly display
Directly display
Directly display
Trouble record
Trouble record
Directly display
Directly display
Trouble record
Directly display
Directly display
Directly display
Directly display
Trouble record
Trouble record
Directly display
Directly display
Trouble record
Trouble record
Trouble record
Trouble record
Trouble record
Trouble record
Trouble record
/
Outdoor
(LED1 flash times)
Communication fault between indoor and outdoor
15
units
Indoor temperature sensor failure
/
Indoor coil sensor failure
/
/
Indoor eeprom failure
/
Indoor fan failure
22
Internal unit antifreeze protection
21
Internal unit overload
Eeprom failure
1
2
IPM failure
AC current overcurrent protection
3
Communication error between module board
4
and main PCB board.
5
High pressure protection
Power over/under voltage protection
6
Compressor stall / press instantaneous stop
7
Compressor discarging temperature protection
8
9
Abnormal of DC motor
10
Abnormal of piping sensor
11
Suction temperature sensor failure
12
Abnormal of outdoor ambient sensor
13
Abnormal of compressor discharge sensor
Lack of refrigerant
16
17
4-way valve reverse failure
18
Compressor jam (only for spdu)
19
Module PWM select circuit error
Outdoor terminal block temperature protection
20
Instantaneous over-current protection of the
24
compressor
Compressor U-phase overcurrent
25
Compressor V-phase overcurrent
Compressor W-phase overcurrent
26
Module reset
27
CT disconnection
37
Outdoor coil protection
38
Compressor driver board failure
46
Model matching abnormality
25
fault description
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