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Carrier 38TPA042 Control Board
The entire heating and cooling system will not activate unless this important circuit board is properly connected to the unit. The control board is made to operate the gas valve, the ignition igniter, all the sensors as well as the air circulator all in one unit. It is imperative that you select wisely while selecting a replacement because of the wide variety of models within certain brands. The correct control board is supposed to have a part number that matches the brand and the model of air handler system you have.
Major symptoms of an ailing main circuit board
- The power to the system has to be turned off and back on frequently for it to run
- System has flashing code instantly appearing on the circuit board
- The HVAC system is unwilling to start at all
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