Error Code Fd
Unit is in forced defrost mode
Minor
Usually easy to fix - may resolve on its own
Also displayed as: Fd on display
What This Means
Service test mode: Freezer Key + Alarm Key held 8 seconds, then two key presses to reach defrost mode
What actually causes this:
Service mode intentionally activated for defrost system testing.
First Thing to Check
Verify forced defrost was intentionally activated during service; if not, cycle power to cancel.
Parts Involved
How to Fix
- 1
Monitor defrost heater operation — buzzer beeps 0.5s ON / 0.5s OFF during defrost
- 2
Cancel by pressing test mode button again or by cycling power
Other Error Codes for RH29H9000SR
I/O expander chip on main board has a communication fault
Display panel and main control board cannot communicate
Main control board and inverter board cannot communicate
There is a configuration mismatch between the panel and main boards
Refrigerator is in Cooling Off mode — not cooling
Unit is in forced manual operation / cooling test mode