Error Code MAIN-PANEL
Control board cannot talk to display
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: MAIN-PANEL LED blinks
What This Means
Communication cable disconnected or loose; Corrupted data transmission; PCB failure
What actually causes this:
Communication cable came loose or main board failed
First Thing to Check
Check if display shows anything at all
Parts Involved
How to Fix
- 1
Verify cable connection between main and panel PCB
- 2
Check for damaged connectors
- 3
Use oscilloscope to verify signal
- 4
If cable OK, replace PCB
Other Error Codes for RF28R7201AA
Main board input/output chip failure
Fridge defrost heater not working
Outdoor air sensor not responding
Ice delivery duct heater failure
Freezer defrost heating element failure
Dispenser display not communicating
Compressor control board communication failed
Ice storage compartment heater failure