Haier MRV5 - Page 30

28
Failure code
Failure code
display on
the outdoor
digital display
board
Failure code
denition
Failure code denition Remarks
111
Compressor out of
control
During start-up or operation, the rotor
position cannot be detected for 6 consecutive
times, failure alarm. The inverter PCB will be
automatic recovery after compressor stops
for 5 seconds.
Resumable
112
The temp. of the
module n is too
high
The temp. of the module n≥94
℃
, failure
alarm.
The temp. of the module n
＜
94
℃
, the
inverter PCB will be automatic recovery.
114
The inverter input
power voltage is
abnormal
The voltage
＜
DC420V, failure alarm.
The voltage
＞
DC420V, the inverter PCB will
be automatic recovery.
The voltage
＞
DC642V, failure alarm.
The voltage
＜
DC642V, the inverter PCB will
be automatic recovery.
The power supply of inverter is interrupted
instantaneously.
116
Abnormal
communication
between the inverter
PCB and the control
PCB
If no communication signal is detected for
30 seconds, , failure alarm.After detection,
inverter PCB will recover immediately.
117
The inverter module
over current
(software)
Module rectier side software instantaneous
overcurrent
Module overload
Module software over current
118
Compressor startup
failed
The compressor failed to start continuously
for 5 times.
119
Current detection
circuit failure
The module rectier side current detection
circuit is abnormal.
The sensor used for current detection of
inverter controller is abnormal, disconnected
or connected incorrectly.
121
Power supply of
inverter module
board is abnormal
Power supply of inverter board is broken
down instantly.
122
The temp. sensor
of inverter is
abnormal.
The resistance of inverter temperature
sensor is abnormal or not connected.