Name: Samsung RH22H9010SR
Brand: Samsung

Question 1

What does error code 44Er mean on Samsung RH22H9010SR?

Accepted Answer

Main control board and inverter board cannot communicate. Cause: Wiring harness between main and inverter PCB is shorted or open; Resistor R210 or R212 shorted or open; Terminal CN103 issue on inverter board; Defective main PCB; Defective inverter PCB.

Question 2

What does error code 46Er mean on Samsung RH22H9010SR?

Accepted Answer

I/O expander chip on main board has a communication fault. Cause: Defective main PCB; I/O expander circuit failure on main PCB.

Question 3

What does error code Fd mean on Samsung RH22H9010SR?

Accepted Answer

Unit is in forced defrost mode. Cause: Service test mode: Freezer Key + Alarm Key held 8 seconds, then two key presses to reach defrost mode.

Question 4

What does error code FF mean on Samsung RH22H9010SR?

Accepted Answer

Unit is in forced manual operation / cooling test mode. Cause: Test mode activated intentionally via Freezer Key + Alarm Key for 8 seconds, then pressing any key.

Question 5

What does error code O-FF mean on Samsung RH22H9010SR?

Accepted Answer

Refrigerator is in Cooling Off mode — not cooling. Cause: Cooling Off mode intentionally activated by pressing Freezer Key + Lighting Key + Fridge Key for 5 seconds.

Question 6

What does error code oP-Er / oP-Ch mean on Samsung RH22H9010SR?

Accepted Answer

There is a configuration mismatch between the panel and main boards. Cause: EEPROM option data mismatch between panel and main; Main PCB replaced without matching option settings; Communication fault between panel and main.

Question 7

What does error code PC-Er / PC-Ch mean on Samsung RH22H9010SR?

Accepted Answer

Display panel and main control board cannot communicate. Cause: Wiring harness issue between panel and main PCB; Defective panel PCB; Defective main PCB; Loose connector at upper hinge or door panel.

RH22H9010SR

Error Codes

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Code	Meaning	Severity
44Er	Main control board and inverter board cannot communicate	Critical
46Er	I/O expander chip on main board has a communication fault	Critical
Fd	Unit is in forced defrost mode	Minor
FF	Unit is in forced manual operation / cooling test mode	Minor
O-FF	Refrigerator is in Cooling Off mode — not cooling	Minor
oP-Er / oP-Ch	There is a configuration mismatch between the panel and main boards	Moderate
PC-Er / PC-Ch	Display panel and main control board cannot communicate	Critical