Lennox HVAC Error Code E600: How to Fix It

Q: What causes Lennox error code E600?

Error code E600 is typically caused by loose or damaged wiring between the thermostat and indoor blower motor, a faulty blower motor, control board issues, or communication wire breaks. Poor electrical connections are the most common cause.

Q: Can I reset Lennox error code E600 myself?

Yes, you can try resetting the error by turning off power to the system for 5 minutes, then restoring power. However, if the underlying communication issue isn't resolved, the error will return. The reset is only a temporary fix.

Q: Is it safe to run my Lennox HVAC with error code E600?

No, you should not continue running your system with error E600. This error indicates the system cannot properly control the blower motor, which can lead to poor performance, increased energy consumption, or potential damage to other components.

Q: How much does it cost to fix Lennox error E600?

Repair costs vary depending on the root cause. Simple wiring repairs may cost $150-300, while blower motor replacement can range from $400-800, and control board replacement may cost $300-600. Many issues can be resolved with basic maintenance.

Q: Will Lennox error E600 damage my HVAC system?

While E600 won't immediately damage your system, continuing to operate with this error can strain other components. The system may cycle incorrectly or run inefficiently, potentially leading to premature wear of the compressor, heat exchanger, or other expensive parts.

Abstract

Lennox error code E600 indicates that your HVAC system has lost communication with the indoor blower motor. This communication failure prevents the system from properly controlling airflow, which can lead to poor heating or cooling performance and potential system shutdown.