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Carrier 50XT-A24 Control Board
It is impossible for your furnace or air handler to even be able to function lest the main control board is configured and seated properly. The control board is designed to operate the gas valve, the igniter, all the various sensors and the blower all at once. The board you select will need to be a match with your existing board and be compatible with the brand and the model of the unit in question. Be absolutely sure while choosing a new control board due to the many differences between particular brands and their models.
Simple indications to watch for in a bad main board
- When turned on, there is a type of code shown directly somewhere on the circuit board
- The entire system has to be turned off and back on frequently for it to kick in
- Entire unit is unable to operate at all
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