Haier MRV II - Indoor Failure Code List

- 116 -
digital
tube
indication
on master
unit
indication
on wired
controller
(hex)
failure code definition
failure description
74
20
DC fan motor driving board
over current or curent
transducer broken down
in communication the code byte is 0*40. 2 minutes and 50
seconds later after unit stops, resume.If it occurs 3 times
in an hour, confirm the alarm.
75
20
compressor power cable of
inverter board phase
sequence is incorrect
after compressor starts up, the high pressure is lower than
the low pressure for 1 minute continuously.
Part 3
3.2 Indoor failure code list
1
2
3
4
6
8
7
20
10
9
5
01
08
09
0A
05
07
06
04
03
02
indication on
wired controller
outdoor failure code
flash times of LED5 on
indoor PCB/timer LED
on remote receiver
failure code definition
indoor ambient temp. sensor Ta failure
indoor coil temp. sensor Tc1 failure
indoor coil temp. sensor Tc2 failure
indoor TES sensor failure
indoor EEPROM failure
communication between indoor and outdoor failure
communication between indoor and wired controller
failure
indoor drainage failure
indoor repeated address
indoor repeated central control address
outdoor corresponding failure
01
08
09
0A
05
07
06
04
03
02
outdoor failure code