Error Code DAMPER_HEATER_ERROR
Damper heater malfunction prevents condensation prevention
Moderate
Address soon - your appliance may not work properly
Also displayed as: Damper Heater Error
What This Means
Heater open circuit (infinity resistance, nominal ~135 ohms); Heater short circuit (0 ohms); Bad connector contact at CN40 pins 25 and 27; Wiring disconnection or corrosion; MICOM relay failure for damper heater control
What actually causes this:
The damper heater failed or disconnected, allowing condensation to form on refrigerator door edges
First Thing to Check
Measure the heater resistance between CN40 pins 25 and 27
Parts Involved
How to Fix
- 1
Check CN40 connector insertion at pins 25 (Brown) and 27 (Black)
- 2
Measure heater resistance between CN40 pins 25-27: should be ~135 ohms ±7%
- 3
Measure MICOM #91 output voltage on pin 25-27
- 4
Check expected voltage: 3.5V-4.8V when heater active, 0V when off
- 5
Verify damper door operation
Other Error Codes for RF28T5101SR
Refrigerator compartment temperature sensor is disconnected or dead
Internal humidity sensor has failed or is disconnected
Defrost sensor on freezer evaporator is failed or disconnected
Freezer fan motor is not running or not sending feedback
Supply voltage to compressor is too high
Freezer temperature sensor is failing or disconnected
Ice maker temperature sensor in freezer is failed or unplugged
External room temperature sensor is failed or disconnected