How to Fix Whirlpool Refrigerator Error Er 1C

Error Code: Refrigerator Difficulty: Hard

Problem: Inverter compressor communication failure (on models with variable speed compressors)

How to Fix Refrigerator Error

1. Unplug refrigerator immediately – inverter failure can damage compressor windings.
2. Remove rear access panel to access inverter board (mounted near compressor).
3. Inspect inverter board for burnt components, especially near power transistors and capacitors.
4. Check all connectors between inverter and compressor for corrosion or loose seating.
5. Verify 120V AC power reaches inverter board during operation.
6. Measure DC bus voltageon inverter (should be 300-340V DC when operating).
7. Inspect compressor terminal connections for arcing or overheating damage.
8. If inverter board shows visible damage or burnt components, replace inverter assembly W
9. If inverter tests good but error persists, compressor windings may be shorted – requires professional diagnosis.
10. After inverter replacement, monitor compressor operation through multiple cycles verifying smooth speed transitions without error codes.