Any idea why when the signal gets sent to the gas valve to open it doesn t work.
Lennox furnace gas valve not opening.
Fixing a gas furnace.
This is a real time look at how i m keeping warm until the new gas valve comes.
It goes away if i give the inlet pipe a slight rap with a wrench.
These furnaces were made between 1982 until the middle 1990s.
What sould we do next.
Replaced board gas valve hot surface ignitor flame sensor and tstat we disconnect re and white wire to board l e d is on constant.
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In addition to the air flapper valve there is a gas flapper valve also.
The valve will make a chattering sound while its open.
Furnace gas valve will not open hot surface ignotor lights can here click for solenoid no 24v.
Sorry about the poor camera work.
The problem is intermittent in that it does not happen each time the furnace comes on.
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I missed the money s.
It goes away.
The gas never flows there s no click from the valve opening and the flame never lights.
Flame sensor is clean.
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Locate the gas valve which is typically near the bottom of the unit positioned next to the pilot light.
Lennox g16 gas furnace click here the lennox pulse g14 and g21 gas furnace.
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I have a lennox furnace with a honeywell gas valve gsv8204h1006.
Take out the bolts in the service panel on the side of the furnace using a nut driver.
Thermostat is not the issue tried swapping the two and it didn t fix it rollout switches have continuity.
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