How To Find Hvac Control Board
How To Find Hvac Control Board. Similar to the contactor, the furnace relays can become burnt and pitted over time. You should also check that the output is no more than 24v.
This is very easy if your control board has an indicator light. The first step is to confirm power is getting to the control board. It is usually quicker to locate and purchase a new control board than to locate and solder in a new relay on the board.
If Its Anything Else It Could Damage The Thermostat.
The control board is generally located behind the lower access panel, in front of the blower. These miniature relays will let certain motors within get the proper amount of voltage to work properly. Mark all of the wires and write down which connections they go to on the board.
This Can Be A Somewhat Overwhelming Task.
In most cases the control board can be found at your furnace or air handler. There are live 110 lines into that transformer. Check the print on the circuit board to determine which of those wires.
The Price Of A New Furnace Control Board Starts From $50 And May Range Up.
That is inside your hvac unit. Two (or maybe three) wires run from the control board to blower motor. Its often the blue wire but i would need a better angle on the transformer to tell for sure on that particular one.
Wiring Diagram Also Provides Beneficial Ideas For Projects Which May Require Some Extra Equipment.
There should be a diagnostic chart on the inside of the panel lid that will explain what the warning lights mean. It does not have to be! When heat is needed, the control board opens the gas valve for the burners and awaits an immediate.
You Should Also Check That The Output Is No More Than 24V.
It’s a circuit board that controls such functions in the furnace as the ignition, gas valves, flame sensor, and blower motor. It is usually quicker to locate and purchase a new control board than to locate and solder in a new relay on the board. If you’re unable to locate your hvac control board or are uncomfortable doing so, please contact a certified hvac technician in your area for additional assistance.
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