Lennox furnace error code t0
The Lennox furnace error code t0 means that the Low-Pressure Switch 1 (LPS1) has tripped. This trip signal indicates that the low-pressure switch, which controls the operation of your system, has been activated.
The Lennox furnace error code t0 occurs when the internal thermostat cannot shut off the burner on the HVAC system.
The LEN-27, a Lennox furnace error code, indicates that the burner line has been locked out. This occurs as a result of either high oil pressure or excessive heat. To resolve this issue, LEN-27 requires that you follow these steps:
1) Turn off the gas valve
2) Wait 20 minutes for pressure to dissipate before turning the gas valve back on
3) Engage the thermostat reset button
4) Wait for the burner to ignite and cycle for 10 seconds before turning the gas valve back on
Sometimes, when it’s time to replace your furnace, you might get an error code from your heating system. This particular error code is called Lennox furnace error code to, and it’s one that you’ll want to avoid as much as possible.