Lennox furnace error codes xc20
This article will provide information on troubleshooting the Lennox furnace error codes xc20 and how to fix it.
Lennox furnace error code xc20 can appear when the burner’s diagnostic system detects a defective burner. The burner diagnostic system monitors the status of associated electronic components of the burner and will take appropriate action when a defective component is detected.
The following are potential causes for Lennox furnace error code xc20:
– Faulty or damaged gas valve
– Burner control unit (BCU) failed
– Incorrect electrical wiring to BCU
– Burner diagnostics signal is failing on the ground wire input
Call a technician if the furnace does not seem to work or if you have any questions after following these steps.
Start your furnace by turning the knob on the control panel to “HEAT-ON” for 24 hours before attempting to use it. If your hot water runs out before then, you can use your oven as an alternative heat source.
Lennox furnaces have various error codes that can be accessed with a scanner. Lennox provides these error codes to help customers diagnose issues with their furnaces, and they can also help technicians troubleshoot issues with the furnace.
These error codes are useful when trying to figure out what your furnace is doing. If you know the code, it would be easier for you to decide what your next step should be.
