Error Code 4
Freezer defrost sensor is not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 4c
What This Means
Sensor slipped out of housing; Wire cut; Wire short circuit; Sensor reading outside -50°C to +50°C range
What actually causes this:
Defrost sensor on evaporator is frozen or disconnected
First Thing to Check
Verify the defrost sensor connector is seated properly
Parts Involved
How to Fix
- 1
Measure voltage between Case Connector DC BLU1 #14 and #15
- 2
Voltage should be between 4.5V and 1.0V
- 3
Check defrost sensor housing
- 4
Verify sensor is detecting evaporator temperature
Other Error Codes for BRF425200AP
FlexZone compartment sensor failed
Pantry compartment temperature sensor failed
Outside humidity sensor is broken
Outside temperature sensor is broken
FlexZone defrost sensor is not working
Fridge temperature sensor is broken or disconnected
Fridge defrost sensor is not working
Freezer temperature sensor is broken or disconnected