Lennox Furnace Gas Valve Not Opening

The valve will make a chattering sound while its open.

Lennox furnace gas valve not opening.

Fixing a gas furnace. Sorry about the poor camera work. Take out the bolts in the service panel on the side of the furnace using a nut driver. The gas never flows there s no click from the valve opening and the flame never lights.

If you re new to tech support guy we highly recommend that you visit our guide for new members. Click here to join today. 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. If you do not have the ability to do these operations safely do not attempt them.

The valve will make a chattering sound while its open. Thermostat is not the issue tried swapping the two and it didn t fix it rollout switches have continuity. These furnaces were made between 1982 until the middle 1990s. Tech support guy is completely free paid for by advertisers and donations.

This valve is in the gas line downstream of the. I have a lennox furnace with a honeywell gas valve gsv8204h1006. It goes away if i give the inlet pipe a slight rap with a wrench. I missed the money s.

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Any idea why when the signal gets sent to the gas valve to open it doesn t work. Furnace gas valve will not open hot surface ignotor lights can here click for solenoid no 24v. Flame sensor is clean. Locate the gas valve which is typically near the bottom of the unit positioned next to the pilot light.

The problem is intermittent in that it does not happen each time the furnace comes on.