Haier MRV 5-RC VP1-112B Service Manual page 206

Failure code
Outdoor Indoor unit LED status
digital
display tube:
83
Indoor wired
Outdoor unit LED status
controller:
53
1. Model
MRV 5-RC series
2. Abnormity detection method
3. Abnormity confirmation
conditions
4. Possible causes
◆ BM3-1 / 2/3 dip switch
setting wrong or bad continuity.
Normal
Failure diagnosis and troubleshooting
Diagnosis
Check if the dip switch setting is
correct
Check if the BM3-1 / 2/3 dip
switch is conduction state
Set the BM3-1 / 2/3 dial
repeatedly to ensure the
disconnected status
LED5 Failure description:
Outdoor unit model are set incorrectly
20 times
LED1 LED2
Normal
Y
N
N
Y
203
Troubleshooting
Adjusting the setting and re-
search outdoor and locked
Replace the PCB