Carrier Furnace Control Board Troubleshooting

The indoor unit should include an air filter that traps dust dirt and other airborne particles.

Carrier furnace control board troubleshooting.

Here is a picture of two limits and one rollout switch. Sometimes the thermostat gets turned off or the setting changed by accident. If the furnace s draft inducer will not start or if the blower motor will not start then this could very well be a control board problem. Changing the filter was the only thing so far that might have helped resolve this.

You can purchase a filter from an appliance hardware or retail store if you have your unit s. Your ac system is more than just the outdoor unit sitting by the side of your home. A hard lockout will automatically reset if the hardware fault clears. First make sure you have power to the board.

Hard lockout if the control detects a fault on the control board the status led will be de energized and the control will lockout as long as the fault remains. How to change the furnace filter varies with different carrier heaters so refer to your unit s manual. That is true for air conditioner troubleshooting heat pump troubleshooting or gas furnace troubleshooting. If code persists you need a technician onsite to properly diagnose ad repair.

Additional comfort enhancing functions on select models include ideal humidity system technology for relief from hot and sticky summer air and comfortfan technology which allows you to select furnace fan speeds from the infinity system control. In some cases this will be line voltage and in other cases the board will get its power from the control transformer. This can easily be overlooked. Carrier furnaces combine quality and performance in a durable attractive and compact cabinet.

Nordyne m1m n1b series error codes m1m m1b series nordyne error codes png. Carrier gas furnace troubleshooting step by step. The next most common step in ac troubleshooting is checking for a dirty air filter. A circuit board in the most common system works off of input and output.

Reset power to the furnace. The truth is many homeowners have thought their carrier furnace wasn t working but all they needed to do was to turn on the system or turn up the heat.