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W
c3
Moderate
Whirlpool · Refrigerators
Defrost Sensor or Fuse Open
Quick Answer
Error code C3 on your Whirlpool Refrigerators means: Defrost Sensor or Fuse Open. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
WRF555SDFZWRQA59CNKZWRS325SDHZWRS588FIHZWRT518SZFMWRX735SDHZ
Likely Causes
  1. Defrost temperature sensor has failed open
  2. Thermal fuse in the defrost circuit has blown due to overheating
  3. Wiring damage to the defrost sensor circuit
  4. Evaporator temperature exceeded safe limits causing protective fuse to blow
How to Fix It
1
Unplug the refrigerator and access the evaporator compartment
2
Locate the defrost sensor, usually clipped to the evaporator tubing
3
Test the defrost sensor with a multimeter; it should read approximately 16,000 ohms at 37 degrees F
4
Check the thermal fuse for continuity and replace if blown
5
Replace the defrost sensor if its resistance does not match the specification chart
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
Defrost sensor with fuse (WPW10384183)
Wire connectors
Cable ties
Related Error Codes
C1C2CFEFCC
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