Lennox HVAC Error Code E11: How to Fix It

Q: What does Lennox error code E11 mean?

E11 indicates a compressor outlet over current condition, meaning the compressor is drawing too much electrical current. This can be caused by a failing run capacitor, a faulty compressor, refrigerant issues, or dirty coils.

Q: Can I reset Lennox error code E11?

Sometimes turning off the power to the system for 5-10 minutes and then restoring it can clear temporary faults. However, if the underlying issue persists, the error will return.

Q: How much does it cost to fix Lennox error E11?

DIY fixes like replacing a capacitor cost $10-$30 for the part. Professional repair may range from $150-$500+ depending on the cause, with compressor replacement costing $1,500-$3,000.

Q: Is it safe to run my HVAC with error code E11?

No, running the system with a compressor over current can cause permanent damage to the compressor or other components. It is best to shut off the system and diagnose the issue.

Q: How often should I clean my Lennox condenser coils to prevent E11?

Annual cleaning is recommended, typically before the cooling season. If you live in a dusty area or near foliage, you may need to clean more often.

Abstract

Lennox error code E11 indicates a compressor outlet over current condition. This means the compressor is drawing more electrical current than it should, which can be caused by a faulty run capacitor, a failing compressor, or electrical issues. Ignoring this error may lead to compressor damage or system failure.