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Mitsubishi MSZ-A09NA Gas Valve
The gas valve regulates the flow the natural gas as it arrives to the system. This valve may be controlled by the control board which is affixed to the main HVAC system, if it is equipped with one.
Main clues the main gas valve has little life left
- The valve looks damaged
- System refuses to start
- You smell gas
- Furnace will not light
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