Lennox HVAC Error Code E292: How to Fix It

Q: What causes Lennox error code E292?

Error code E292 is caused by a faulty outdoor air temperature sensor that is either open (broken connection) or shorted (wires touching). This can happen due to weather damage, age, or loose connections.

Q: Can I run my Lennox HVAC with error code E292?

Your system may continue to run but won't operate at peak efficiency. The HVAC unit relies on outdoor temperature readings for optimal performance, so it's best to fix this error promptly.

Q: How much does a Lennox OAT sensor cost?

Outdoor air temperature sensors typically cost $30-80 depending on the specific model. This is much less expensive than the energy waste from an inefficient system.

Q: Where is the outdoor sensor located on a Lennox unit?

The OAT sensor is usually mounted on the outdoor condenser unit, positioned away from heat sources and direct sunlight. It appears as a small probe or bulb with wires running to the control board.

Q: How long do outdoor air temperature sensors last?

OAT sensors typically last 5-10 years but can fail sooner due to weather exposure, physical damage, or electrical issues. Regular HVAC maintenance can help extend sensor life.

Abstract

Lennox HVAC error code E292 indicates your outdoor air temperature (OAT) sensor is either open or shorted and needs replacement. This sensor measures outside air temperature to help your system operate efficiently.