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Lennox G40DF-48C-090X Gas Valve
The main job of a gas valve is that it is a valve that will regulate all of the gas as it enters the air handler system. This important valve is monitored by the main control board which is affixed to the main HVAC system, is it so equipped.
Main clues the main gas valve should be replaced
- The valve looks damaged
- Furnace will not light
- You smell gas
- System refuses to start
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