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Mitsubishi MSY-A17NA Control Board
The Mitsubishi MSY-A17NA control board is created to direct the gas valve, the ignition igniter, all the sensors as well as the air circulator all in one unit. Heating and cooling systems will not even activate without this vital piece of hardware is hooked up and is correctly configured. You must be careful while picking a new replacement board due to the many differences between HVAC systems. The correct control board will have a matching part number that will fit in both the brand and specific model of air handler system you have.
Signs your primary control board will have to be replaced
- The board has to be turned off and back on quite often for it to kick in
- System has lit up error code instantly appearing on the control board
- Entire unit cannot work correctly
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