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Carrier 50JS042300 Control Board
The control board is constructed to direct the gas valve, the igniter, all the various sensors as well as the air circulator all at once. It is impossible for your furnace or air handler to even function without the control board in its proper place and configured for your unit. You must be sure upon choosing a board as a replacement due to so many small differences in HVAC systems. The proper control board will have a part number that will match both the make and model of your particular system.
Signs your control board will not live much longer
- The furnace or AC is unable to operate whatsoever
- There is some sort of error code shown directly on the board
- Everything has to be turned off and back on habitually for the furnace or AC to kick on
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