Indoor Failure Code List - Haier MRV II Instruction Manual

digital
indication
tube
on wired
indication
controller
on master
(hex)
unit
DC fan motor driving board
74 20
over current or curent
transducer broken down
compressor power cable of
75 20
inverter board phase
sequence is incorrect

3.2 Indoor failure code list

01
indication on
wired controller
02
03
04
05
06
07
08
09
0A
outdoor failure code
outdoor failure code
failure code definition
flash times of LED5 on
indoor PCB/timer LED
on remote receiver
01
02
03
04
05
06
07
08
09
10
0A
20
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.
after compressor starts up, the high pressure is lower than
the low pressure for 1 minute continuously.
indoor ambient temp. sensor Ta failure
1
2
indoor coil temp. sensor Tc1 failure
3
indoor coil temp. sensor Tc2 failure
4 indoor TES sensor failure
5
indoor EEPROM failure
6
communication between indoor and outdoor failure
communication between indoor and wired controller
7
failure
indoor drainage failure
8
indoor repeated address
9
indoor repeated central control address
outdoor corresponding failure
- 116 -
failure description
failure code definition
Part 3