Trane Furnace System Lockout

If one of the sensors reports an unsafe condition the furnace controller shuts off fuel and power to prevent unsafe operation.

Trane furnace system lockout.

The remedy to this problem is simple replace the air filter. Since our hvac system is in our laundry room i understand that lint may cause some issues with the sensor. 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.

After 2 weeks of working well the furnace started having the same lock out issues after 3 attempts to light. Your furnace normally will remain in the locked out state until you manually reset it. At least now i have a way to reset the lockout. It does this every year.

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. The furnace will go into lockout sometime in the next 24 hours. My trane furnace is flashing the 2 red light system lockout code. 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.

It then went into lockout. Most furnace lock outs are caused by problems with igniters flame sensors and limit switches. Unfortunately this year i am on my own and don t know what to do. 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.

About 10 seconds after the hot igniter starts to glow the gas comes. Gas and oil home heating furnaces trane xl 80 system lockout. We also do not have an outside air source however we always keep the laundry room door open for better airflow. This condition is known as lock out.

I have a trane xl 80 system. At least the instructions with the new board are a little better than what i had with the first one. 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.