Error Code FF
Unit is in forced manual operation / cooling test mode
Minor
Usually easy to fix - may resolve on its own
Also displayed as: FF blinks on display
What This Means
Test mode activated intentionally via Freezer Key + Alarm Key for 8 seconds, then pressing any key
What actually causes this:
Service technician activated test mode or the mode was accidentally triggered by pressing Freezer + Alarm keys.
First Thing to Check
Unplug the unit and plug it back in to cancel manual operation mode.
How to Fix
- 1
Cancel by unplugging and re-plugging the unit
- 2
Verify compressor and F-fan are running continuously
- 3
Alarm beeps 0.25s ON / 0.75s OFF continuously during this mode
Other Error Codes for RH29H9000SR
Display panel and main control board cannot communicate
Main control board and inverter board cannot communicate
I/O expander chip on main board has a communication fault
There is a configuration mismatch between the panel and main boards
Refrigerator is in Cooling Off mode — not cooling
Unit is in forced defrost mode