Bryant Furnace Gas Valve Won T Open

If the flame sensor does not detect a flame the co ntrol board will shut off voltage to the gas valve to prevent the furnace from heating.

Bryant furnace gas valve won t open.

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. Furnace gas valve will not open hot surface ignotor lights can here click for solenoid no 24v. Everything is working properly on the heater and the gas valve opens when jumped but not through normal wiring even with same voltage. That furnace is over 25 years old.

The gas valve opens when it is jumped directly from the board but not when hooked up normal. What sould we do next. Even if the hsi wasn t working which it apparently is working the gas valve will still receive 24v during trial for ignition. If you have a different bryant product look for a rating plate sticker on the unit.

If the flame sensor is defective it might fail to detect a flame. The flame sensor monitors the burner to detect whether or not a flame is present. Directly from the board it is producing 27v and the voltage at the gas valve is 25 26 8v. Sorry about the poor camera work.

I missed the money. Have you ever had it professionally cleaned. Typically the gas valve circuit will go through its sequence electric ignition regardless of what the ignition circuit is doing. You can find the model number listed on a rating plate sticker inside of the unit.

The gas port where the tube to the pilot light connects is between the two valves so that gas can flow to the pilot light as long as the first valve or safety valve is open. Fixing a gas furnace. If the second valve or main valve is open it can also flow to the burner trays. As long as everything is closed the valve should get 24v.

If that flame isn t full and normal the main gas valve won t open. This is a real time look at how i m keeping warm until the new gas valve comes. Just buy a.