Diagnosis And Solution - Heat Controller VMH C Series Service Manual

Service Manual

9.2 Diagnosis and Solution

9.2.1 EEPROM parameter error diagnosis and solution
Shut off the power supply and turn on 5 seconds
later. Does it run?
Is the EEPROM chip plugged in indoor PCB well?
Replace the main PCB of indoor unit
VMH 30, 36 SerieS
No The problem comes out again
Yes
Yes
No
32
34
Heat Controller
Replace indoor PCB
Correct the connection