Lennox furnace error code x3
Lennox furnaces often have error codes that describe the problem. These error codes are not always clear-cut and need to be researched by the service technicians.
The Lennox furnace error code x3 indicates that there may be water damage in the home. If this is the case, it must be addressed immediately before it leads to corrosion or worse problems such as a fire.
The Lennox furnace error code x3 can also indicate rodent problems in the home, which is why you should ensure there aren’t any animals left in your home after turning off the heating system.
Lennox furnaces display a common error code when the furnace does not respond or starts to provide an error.
This error code is typically displayed on the first line of the display.
A stuck gas valve causes an error code X3 in a Lennox furnace, but you may be able to fix it with some assistance.
Solution: If your furnace is having trouble firing up properly, one of the first things you should do is turn off all other furnaces and clean the flue cap. Next, make sure that no other furnaces are running by checking the thermostat. Then turn off your power for about 20 minutes and wait for the compressor to cool down before turning it back on. Once you have completed these steps, put your hand on the gas valve and push until it clicks into place.