Trane Heating & cooling combined unit Parts — Browse All Models

Common Trane heating and cooling combined unit parts that need replacing

• Air filter. Replace the air filter monthly or as directed in your heating and cooling combined unit’s owner’s manual. Replacing the air filter regularly helps keep the heating and cooling combined unit running smoothly and helps the unit last longer.
• Thermostat. The thermostat turns the heating and cooling combined unit on and off. The thermostat can eventually wear out or break. Replace the thermostat if it doesn’t control temperature accurately or doesn’t turn on the heating and cooling combined unit at all.
• Blower motor. The blower motor often runs for long periods without stopping. The bearings that support the motor shaft can wear out over time. Electrical problems inside the motor can also prevent the blower motor from running. Replace the blower motor if it doesn’t run or makes loud noises when running.

How to troubleshoot your Trane heating and cooling combined unit when it won't start

• Check for electrical power.Check the house circuit breaker for the heating and cooling combined unit to make sure it’s turned on. Reset the circuit breaker if it’s tripped.
• Check the condensate drain.Heating and cooling combined units often have a float switch mounted on the evaporator condensate drain pipe that shuts off the air conditioner if condensate water isn't draining. Shut off power to the heating and cooling combined unit and check for condensate water backing up in the evaporator drain system. Clear the drain to reset the float switch and restore power to the heating and cooling combined unit.
• Check the thermostat. Make sure you have the thermostat set correctly. Adjust thermostat settings if necessary. If the thermostat doesn't have power, check its wiring and reconnect any loose wires. Replace the thermostat if it isn't working.
• Examine the electronic control board. Disconnect electrical power to the heating and cooling combined unit and check the electronic control board wiring connections. Reconnect any loose wires and repair any broken wires. Check for burn marks on the circuit board and replace the electronic control board if you see burnt spots or melted wires.