Troubleshooting steps
Clean condenser coil, check airflow, verify refrigerant charge
HVAC Error Codes
Rheem F20 Error
High pressure switch open
Details
Rheem F20 error indicates high pressure switch open. Dirty condenser, restricted airflow, overcharge. Clean condenser coil, check airflow, verify refrigerant charge.
Error typefault
MeaningHigh pressure switch open
Typical causesDirty condenser, restricted airflow, overcharge
SolutionsClean condenser coil, check airflow, verify refrigerant charge
Severityhigh
Catalog references
Where this appears
RheemF20
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What causes F20 error?
Dirty condenser, restricted airflow, overcharge
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