Century COMFORT-AIRE VMH-SG Series Service Manual page 100

TS07: Indoor PCB / Display board communication error diagnosis and solution
Description: Indoor PCB does not receive feedback from the display board.
Recommended parts to prepare:
• Communication wire
• Indoor PCB
• Display board
Troubleshooting and repair:
Power off, then restart the unit 2 minutes
Is it still displaying the error code?
Check the wirings and connections
later
YES
Are all the connections
good?
YES
Replace the indoor main PCB
Does the error still exist?
Replace the display board
 Troubleshooting
Troubleshooting
The unit functions normally
NO
Ensure a proper connection
NO

Service Manual - VMHxxSG