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Error code reference
Frigidaire Refrigerator Error Code Er CO
Communication error between Micom of Main PCB and Display Micom.
SourceFrigidaire LFX28977 - Full Service Manualp. 22, 34-35
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 if the connection is loose on Display PWB CON101; measure voltage between pins 4 and 5 of CON101 for 0V or 5V.
SourceFrigidaire LFX28977 - Full Service Manualp. 22, 34-35
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 Frigidaire refrigerator.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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