How To Diagnose Furnace Control Board
How To Diagnose Furnace Control Board. The furnace control board is the brains of the furnace operation. Usually, the diagnostic light will blink a certain number of times, depending on what is going on in the control board.
Discussion starter · #3 · feb 2, 2013. Errors in sequences and worn or missing parts can also point to. It’s a circuit board that controls such functions in the furnace as the ignition, gas valves, flame sensor, and blower motor.
Turn The Igniter Off And Wait A Few Minutes Before Turning It Back On.
The small blinking indicator light on your furnace’s circuit board helps to diagnose the furnace’s problem. Furnace control boards do not only help in your furnace’s operation and heating cycle. Some furnaces have a slightly different set up.
Simply Short The R And W (Or R And Y) Wires Together And Verify That Heating (Or Cooling) Begins.
The blinking led on the board is what indicates that power is reaching it. If the fan turns on, at least you know that your furnace. You can tell that your furnace control board is bad if there is thermal expansion or if the soldering connections are faulty.
Bad Transistors Can Also Explain Why A Furnace Control Board Isn’t Working Properly.
The control board is the central “brains” of how your furnace operates. The lights blink for nearly all other furnace issues, from low fuel pressure (maybe due to an empty propane tank) to overheating, perhaps due to flame rollout in the gas chamber. It’s a circuit board that controls such functions in the furnace as the ignition, gas valves, flame sensor, and blower motor.
Check The Control Board Indicator Light.
This should give you access to the control board. In this video i show you hot to troubleshoot or diagnose your control board in the furnace or air handler to see if the board is defective or not. Discussion starter · #3 · feb 2, 2013.
This Guide Will Help You Quickly And Efficiently Diagnose A Failed Furnace Control Board.
Locate the control board behind the lower access panel, in front of the blower. With such an illustrative guidebook, you’ll have the ability to troubleshoot, stop, and full your projects easily. My furnace is only pushing out cold air.
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