Trane Furnace System Lockout

About 10 seconds after the hot igniter starts to glow the gas comes.

Trane furnace system lockout.

All furnaces need to have adequate ventilation and a dirty air filter can cause a system lockout to occur. At least now i have a way to reset the lockout. Then reset the furnace. For example a clogged air filter may prevent an adequate supply of air from entering the system s cold air return that causes the heat exchanger limit switch to trip.

My trane furnace is flashing the 2 red light system lockout code. I have a trane xl 80 system. The system did the same thing tried twice to turn on but we still do not have 24v at the red and gray wires going into the top of the gas control. Since our hvac system is in our laundry room i understand that lint may cause some issues with the sensor.

Most furnace lock outs are caused by problems with igniters flame sensors and limit switches. I ignites about six. It does this every year. Unfortunately this year i am on my own and don t know what to do.

This condition is known as lock out. The furnace will go into lockout sometime in the next 24 hours. The remedy to this problem is simple replace the air filter. Gas and oil home heating furnaces trane xl 80 system lockout.

After about 1 3 minutes the fan motor begins to run and delivers heat through the duct system. When i try to start up the system it shows normal heat call on the circuit board. We also do not have an outside air source however we always keep the laundry room door open for better airflow. It then went into lockout.

Three flashes on the trane furnace control board means that the vent pressure is too high or too low which then activates the pressure switch and causes a lockout. Your furnace normally will remain in the locked out state until you manually reset it. Check all incoming and outgoing vents on the furnace air system including on the furnace and clear away anything that may be blocking the air flow.