... How to Light the Standing Pilot Light on a Gas Furnace Troubleshooting an … The furnace will lock out for one hour and then restart. If your furnace does not have a pilot light, move on to the next step. It essentially ensures that there is a flame at the pilot light before it activates the main gas valve. These models also use electronic ignition instead of a pilot light. They are more compact and lighter than the low-efficiency models and have an AFUE of around 80% to 83%. One giveaway that your problem is with your pilot light is if you hear the furnace click on, but it doesn’t fire up. Without it, we would still be huddling around wood fires to stay warm. All you need to do is locate the gas supply valve and rotate it in a counterclockwise direction to open it. Worked perfect on my gas fire[place. A furnace is crucial for comfort and survival in cold winter weather. When your AC goes out in a heat wave or your furnace breaks down in an ice storm, you need emergency service fast! If the furnace fires up but then shuts off after a few minutes, it could be that the control board is faulty. Because gas is involved, problems with gas valves are a major safety concern. Having uncovered this ugly truth, I promptly shut off the furnace pilot light, since we were unlikely to need heating any more that year. 8. If your pilot light is the problem, take a look at your heater for directions on how to relight your pilot light, as this information is usually on the label. The green light is flashing normally. Troubleshooting the valve and looking for known common issues will give you peace of mind by ensuring the safe operation of … ... Because various furnace components … My pilot light was working fine, I installed a new thermocouple last year to fix the pilot light. 10. after 20-30 attempts the heater will kick in and stay on until it reaches the temperature we set on the … Do not leave this limit unhooked. Be sure gas to furnace is on. If the pilot light won't stay lit, the thermocouple may be faulty and should be adjusted or replaced. Low-efficiency models use a natural draft for the flow of combustion exhaust. Overview of a Furnace Ignitor. It is also referred to as a glow plug or glow bar because electric resistance causes the ignitor to glow red-hot, about … Pilot lights should burn blue . This could be caused by low gas pressure or faulty gas valve. Unfortunately, furnaces need regular professional tune-ups and homeowner upkeep to run strongly and efficiently.. 9. Maybe no gas to the pilot. However, a malfunctioning thermocouple may lose the ability to sense heat from the pilot light, causing it to close the gas valve at random. It is a safety device that shuts off the gas if the pilot light goes out or the electric igniter fails. If you have a gas valve that has a PV (pilot valve) and an MV (main valve) then I would think that either you are not getting the 24 volts to the PV since the pilot is not lighting to continue the furnace … Step 6: If Your Furnace Won’t Turn On, Check Your Pilot Light. If it won’t light, make sure gas is flowing to it — check the gas valve and verify that it’s turned on. b. Keep flammable materials away from gas-fired appliances. However, even many modern furnaces still run pilot lights. This bypasses the limit and if it is the one that is open the unit should fire up and not give you blink code 33. If your gas valve is working fine, but the furnace isn’t turning on, check to make sure your pilot light is on. Electronic Ignition Gas Furnace Problems Troubleshooting - Gas furnaces are a prevalent form of heat for homes and businesses, and occasionally a gas furnace needs to be repaired because of a problem with the gas furnace. Sometimes it’s also a matter of spider webs and dust that needs to be cleared away before the thermocouple … House fires endanger everyone in the home and even small fires that are put out quickly often result in thousands of dollars of damage. The Furnace Won’t Stay On. If the pilot light won’t stay lit, a bad thermocouple could be to blame. Pilot light issues – Check your furnace pilot light and make sure it’s lit. Rest assured and know that Aire Serv is here for you, 24 hours a day, 7 days a week, with live dispatchers, prompt service, and no charge for overtime, weekends, and holidays.