er dh
Moderate
Kenmore · Refrigerators
Defrost Heater Failure
Quick Answer
Error code Er dH on your Kenmore Refrigerators means: Defrost Heater Failure. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Remove the freezer back panel (evaporator cover) to expose the evaporator coils and defrost heater
2
Check for heavy frost or ice buildup on the evaporator coils, which confirms the defrost heater is not working
3
Disconnect the defrost heater wires and test for continuity with a multimeter (should show some resistance, typically 20-40 ohms)
4
Test the defrost thermostat (bi-metal) for continuity at room temperature (should be closed/continuity at temps below its rating)
5
Replace the defrost heater if it reads open; replace the thermostat if it is stuck open
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Kenmore defrost heater assembly (part #5303918301)
Defrost thermostat/bi-metal (part #5303918202)
Evaporator cover foam seal
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