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When Trouble Happens
Resumable if
lower than 100
degree
For remote
type, flash
times
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Failure description
Indoor ambient temp. sensor failure
Indoor coil temp. sensor failure
Outdoor ambient temp. sensor failure
Outdoor coil temp. sensor failure (compressor
discharging temp. sensor)
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
Solenoid valve abnormal
Discharging temp. sensor abnormal
EEPROM abnormal
Pressure abnormal(low pressure)
Compressor overheat
Abnormal mode
Outdoor coil B(suction temp sensor-for MRV II)
Outdoor discharging B(oil temp sensor-for MRV II)
Reason
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 different 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
Remarks
shows resumable fault, * shows it is not resumable fault.