How to Fix Maytag Refrigerator Error Er

Error Code: Refrigerator Difficulty: Hard

Problem: General system error – main control board detected uncorrectable fault in compressor drive circuit or sensor array

How to Fix Refrigerator Error

1. Unplug refrigerator for 10 minutes to reset microprocessor.
2. If Er returns immediately on power-up: main board failure likely.
3. Remove rear access panel and inspect main control board W10868991 for visible damage (burnt components, bulging capacitors near compressor terminals).
4. Test compressor start relay/overload separately – remove from compressor pins and shake; rattling indicates failed relay. Replace relay kit if faulty before condemning board.
5. Measure resistance across compressor windings (common to start/run): should read 3-10Ω each with no shorts to ground.
6. If compressor tests good but Er persists, main board has failed compressor drive circuit – replace W10868991 and reprogram with correct code.
7. Note: Er code often appears with compressor not starting – always verify sealed system integrity before board replacement.