Lennox HVAC Error Code E17: How to Fix It

Q: What causes Lennox error code E17?

Error E17 is triggered when the outdoor fan motor fails to operate correctly. Common causes include a defective motor, a bad capacitor, a seized fan blade, or a faulty control board.

Q: Can I still run my AC with error code E17?

No, running the AC without a working fan can cause the compressor to overheat and fail. The system will likely shut down to protect itself. You should turn off the system and troubleshoot.

Q: How do I reset Lennox error code E17?

To reset, turn off power to the unit for 5 minutes, then turn it back on. If the problem is fixed, the error will clear. However, if the underlying issue remains, the code will reappear.

Q: Is a bad capacitor a common cause of E17?

Yes, a faulty capacitor is a very common cause. Capacitors are relatively inexpensive and easy to replace with basic tools.

Q: Where is the fan motor located in a Lennox outdoor unit?

The fan motor is located at the top of the outdoor condenser unit, driving the fan blade that pulls air through the coils.

Abstract

Error code E17 indicates a fault with the outdoor fan motor in your Lennox HVAC system. This typically means the fan motor is not running or is running abnormally, which can be caused by a defective motor, a faulty capacitor, or a control board issue.