fbpx

Lennox e125 error code

Furnace0 comments

Lennox e125 error code

If you’re seeing an e125 error code on your Lennox thermostat, it means there’s an issue with the communication between your thermostat and the outdoor unit. A few things, such as a faulty wire connection or a problem with the outdoor unit, could cause this.
 
To troubleshoot the issue, start by turning off the power to the thermostat and the outdoor unit. Check all wire connections to ensure they’re secure and damage-free. If everything looks good, try resetting the thermostat by removing it from the wall and then reattaching it.
 
If the issue persists, it’s best to contact a professional HVAC technician to diagnose and repair it. They’ll have the expertise and tools necessary to identify the root cause of the issue and get your system back up and running as quickly as possible.