Outdoor Unit Troubleshooting
Code indication
Indoor displaying
panel code indication
Outdoor
fault description
(LED1 flash times)
Indoor and
15
Communication fault between indoor and outdoor
units
Outdoor
E7
Directly display
E1
Directly display
/
Indoor temperature sensor failure
Indoor
E2
Directly display
/
Indoor coil sensor failure
Malfunction
E4
Directly display
/
Indoor eeprom failure
E14
Directly display
/
Indoor fan failure
E5
Trouble record
22
Internal unit antifreeze protection
E9
Trouble record
21
Internal unit overload
F12
Directly display
1
Eeprom failure
F1
Directly display
2
IPM failure
F22
Directly display
3
AC current overcurrent protection
Communication error between module board
and main PCB board.
4
F3
Directly display
F20
Trouble record
5
High pressure protection
6
Power over/under voltage protection
F19
Trouble record
7
Compressor stall / press instantaneous stop
F27
Directly display
8
Compressor discarging temperature protection
F4
Directly display
F8
Trouble record
9
Abnormal of DC motor
F21
Directly display
10
Abnormal of piping sensor
F7
Directly display
11
Suction temperature sensor failure
Outdoor
Malfunction
12
Abnormal of outdoor ambient sensor
F6
Directly display
13
Abnormal of compressor discharge sensor
F25
Directly display
F13
Trouble record
16
Lack of refrigerant
F14
Trouble record
17
4-way valve reverse failure
F11
Directly display
18
Compressor jam (only for spdu)
F28
Directly display
19
Module PWM select circuit error
20
Outdoor terminal block temperature protection
F15
Trouble record
24
Instantaneous over-current protection of the
compressor
F2
Trouble record
Compressor U-phase overcurrent
Compressor V-phase overcurrent
Compressor W-phase overcurrent
25
F23
Trouble record
F9
Trouble record
26
Module reset
F24
Trouble record
27
CT disconnection
F34
Trouble record
37
Outdoor coil protection
F35
Trouble record
38
Compressor driver board failure
F43
/
46
Model matching abnormality
2
5
Summary of Contents for 1U22KAEFRA
Page 17: ...R32 15 Safety Precautions WARNING CAUTION N Open the window and well ventilated the room...
Page 19: ...R32 R32 R32 R32 R32 R32 R32 R32 R32 Read Before Installation 17...
Page 20: ...3 R32 R32 R32 R32 R32 R32 R32 Read Before Installation 18...
Page 21: ...R32 R32 R32 R32 R32 R32 R32 R32 10A HFC 410A Read Before Installation 19...
Page 24: ...Installation Procedure 22...
Page 25: ...evacuation degree Evacuate Installation Procedure 23...