Troubleshooting steps
Check electrical connections verify voltage check compressor condition check for mechanical binding
HVAC Error Codes
E4 – Compressor overload
Compressor overload protection activated
Details
Compressor overload protection has been triggered due to excessive current draw.
Error typealarm
MeaningCompressor overload
Typical causesElectrical fault mechanical binding low voltage
SolutionsCheck electrical connections verify voltage check compressor condition check for mechanical binding
Severityhigh
Catalog references
Where this appears
LennoxE4
Utilities
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FAQ
Common questions
Is compressor damaged?
Possible. Check compressor condition and electrical connections before restarting.
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