15
Troubleshooting
Diagnosis for
inverter models
Resumable if lower than 100 degree
Flash times for remote type
Failure code on wired controller
Failure code for central control
Failure description
Reason
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Indoor ambient temp. sensor failure
Indoor coil temp. sensor failure
Outdoor ambient temp. sensor failure
Outdoor coil temp. sensor failure
Over-current protection
High pressure abnormal
Power supply abnormal
Communication between wired controller and indoor abnormal
Communication between indoor and outdoor abnormal
Drainage system abnormal
Outside alarm signal input
Gas pipe temp. sensor abnormal
Temperature protection malfunction
Discharging temp. sensor abnormal
EEPROM abnormal
Pressure abnormal(low pressure)
Compressor overheat
Abnormal mode
Outdoor coil B(suction temp sensor-for MR
V II)
Outdoor discharging B(oil temp sensor-for MR
V II)
SPDU module temperature protection
Outdoor DC motor failure or system failure
Sensor broken down or short circuit for more than 2m continuously
Sensor broken down or short circuit for more than 2m continuously
Sensor broken down or short circuit for more than 2m continuously
Sensor broken down or short circuit for more than 2m continuously
CT
check abnormal 3 times in 30m
High pressure switch acts 3 times in 30m
Fault phase, short of phase, out of balance greatly
Communication abnormal for more than 4m continuously
Communication abnormal for more than 4m continuously
Float switch broken down for more than 25m continuously
Outside signal broken down for more than 10s
Sensor broken down or short circuit for more than 2m continuously
Solenoid valve act incorrectly 3 times continuously
Sensor broken down or short circuit for more than 2m continuously
EEPROM data missing
Low pressure switch acts in normal running
The discharging temperature is higher than 120degree
Indoor operation mode is dif
ferent with the running indoor unit.
Sensor broken down or short circuit for more than 2m continuously
Sensor broken down or short circuit for more than 2m continuously
Spdu
module temperature is too high
Outdoor DC motor abnormal or cooling & heating abnormal
Remarks
01(01H)
02(02H)
74(4AH)
73(49H)
72(48H)
83(53H)
71(47H)
07(07H)
06(06H)
08(08H)
11(0BH)
03(03H)
13(0DH)
76(4CH)
05(05H)
84(54H)
80(50H)
12(0CH)
75(4BH)
77(4DH)
20(32D)
36(54D)
01D
02D
11
D
12D
10D
14D
22D
06D
05
D
21D
30D
20D
31D
15D
17D
26D
15D
23D
18D
15D
07D
08D
shows resumable fault,
shows it is not resumable fault.
