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Friedrich MW09Y3FM Control Board
The control board is designed to oversee the gas valve, the igniter, most sensors as well as the blower all together. HVAC systems will not operate without the main control board installed. You must do some research upon choosing a board as a replacement due to variances between heating and cooling systems. The proper control board will have a matching part number that will fit in both the make and model of your particular system.
Key clues of a bad primary control board
- The control board has to be turned off and back on repeatedly for the system to continue working
- When turned on, there is some sort of error code being displayed somewhere on the board
- The heating and cooling system is unable to function properly
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