Error Code 22E
Cool Select Room defrost heater circuit has failed
Moderate
Address soon - your appliance may not work properly
Also displayed as: 22E
What This Means
CV defrost heater housing connector separated at CN70; Heater wire open or shorted; Thermal fuse blown (230°F/110°C); Bimetal thermostat stuck open; Failed CV defrost heater
What actually causes this:
Thermal fuse blown on the Cool Select evaporator heater assembly; this is the most common failure point.
First Thing to Check
Unplug the refrigerator and measure resistance at CN70 pin 3 to pin 1 — infinite resistance means open circuit; check the thermal fuse.
Parts Involved
How to Fix
- 1
Disconnect Main PCB CN70
- 2
Measure resistance between CN70 pin 3 and pin 1
- 3
0 Ohm → heater shorted; ∞ Ohm → heater or fuse open
- 4
Check bimetal and thermal fuse on CV evaporator
This Error Applies To
Samsung RF34H9950S Series Refrigerators (2018) (2018–present)
Related Error Codes
Main board internal I/O expander chip has failed
Cool Select Room fan stopped or not sending feedback
Chef Pantry fan motor has stopped
Internal fridge humidity sensor disconnected or failed
Fridge temperature sensor has failed or is disconnected
Chef Pantry temperature sensor has failed
Cool Select Room sensor failed or disconnected
Fridge defrost sensor disconnected or failed