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Carrier 45-4SI Control Board
Your furnace or AC will not function unless the control board is in its proper place and configured for your unit. The Carrier 45-4SI control board is constructed to regulate the gas valve, the igniter, all the sensors and the blower all together. A control board that you have chosen must be compatible with both the make and model of the unit in question. You must be careful while choosing a new control board due to the many differences between certain brands.
General indicators that your main board is going out
- System has some sort of code shown somewhere on the circuit board
- Air conditioning or heating system is not able to go correctly
- The whole system has to be turned off and back on many times a day in order to continue running
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