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Error code reference
GE Refrigerator Error Code Er CO
Communication error between MICOM of Main PCB and Display MICOM, caused by poor communication connection or poor TR of transmitter/receiver Tx/Rx.
SourceGE LMX28988 Refrigerator - Full Service Manualp. 20, 31
Diagnostic procedure
The full Er CO procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check for loose connection, then check Red to White/Red at CON101 on the Display PCB for 12V.
SourceGE LMX28988 Refrigerator - Full Service Manualp. 20, 31
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented
1 manual in the MyPros+ library documents this code for GE refrigerator.
Models covered by the manuals that document this code
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