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Error code reference
Frigidaire Refrigerator Error Code Er IS
Short or disconnection of icing sensor.
SourceFrigidaire LFX28977 - Full Service Manualp. 22-26
Diagnostic procedure
The full Er IS 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; measure resistance between pins 1 & 2 of Housing-A (BL to BL), expected 1.4-120 kΩ.
SourceFrigidaire LFX28977 - Full Service Manualp. 22-26
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
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