If it is not, you can bend the thermocouple back into alignment with the pilot tube—but only after allowing everything to cool. The Pilot Lights But Won't Stay Lit If a water heater pilot won't light at all, the thermocouple probably isn't the problem. I have held the pilot light button pushed in for at least 2 minutes sometimes a little longer, but to no avail! Turn the wall furnace to the lowest temperature setting. In some cases, it could also be an indicator of potential gas buildup. If you’re fairly certain this is the source of the problem, you will either need to have the thermocouple replaced or repaired. Under constant exposure to a hot flame, a thermocouple wears down over time. If you look very closely, you'll find the thermocouple tucked in behind the burners. The furnace stopped working at some point during the night. Standard gas log sets are fairly simple. I turn the knob to the pilot position, then press down and lite the pilot light and depress when it stays lit. As a result, your pilot light assembly bottom will get exposed. Replacing a broken thermocouple is cheap and relatively easy if you're mechanically inclined. Th... SER cable vs Conduit - Indoor subpanel ampacity/temperature questions. You may be able to fix the problem on your own if you’ve got the tools and the wherewithal. In these systems, the pilot will only light (in the case of hot surface igniters, the igniter surface heats) when the thermostat makes a command for heat. Gently pull the gas line out of the pilot assembly housing. If this tube is clogged or dirty, there won’t be enough gas flow to keep the flame strong. Locate the pilot assemble holding screw and remove it. If your pilot doesn’t re-light, won’t stay lit or keeps going out after a short time, you most likely have an issue with the hot water heater thermocouple. I've got an LP water heater in a vacation home. When a propane heater won’t stay lit, often what is happening is that the propane heater may sense that the flame is defective in some way, triggering the propane heater’s safety functions and causing it to shut off. If you're having trouble locating the pilot or thermocouple, double-check to make sure your unit actually has a standing pilot light. If you notice pilot problems in several of your household appliances, this may be the culprit. Some common causes include issues with the thermocouple and pilot tube. Providing Heating, Air Conditioning, and Water Heater Services for. Insert the end of the paperclip into the opening at the end of the pilot to remove any ash or debris that might clog it. There are three reasons why your thermocouple might be malfunctioning: A broken or burned out thermocouple won't detect the flame properly, effectively closing the gas valve until you replace it. Keep holding down the knob while lighting the pilot with a fireplace match or by pressing the igniter button until the pilot lights. 8 Reasons Why Your Water Heater Pilot Light Won’t Stay Lit. This can happen with age. Make sure to follow the directions on your water heater label. You awake on a cold winter morning and cast the covers aside. Before conceding the cost of emergency repairs and calling an HVAC professional, read ahead for some of the most common reasons why your furnace pilot light won’t stay on. It won't stay on. The pilot will light, I turn it to on and it stays lit. Pliers. If your pilot light is staying lit with a large enough flame but the heater isn’t triggering, your thermocouple may be bad. She attended Tarrant County College and studied English composition. Remove the bottom pilot light cover. Unfortunately, there are a variety of reasons why pilot lights go out, all of which are dependent on a number of factors. Keep every intake air register in your home open and clear to avoid a “vacuum” effect in the inlet. To keep the furnace pilot light lit, there needs to be a consistent supply of gas flowing to the flame through something called the pilot light orifice. If your pilot light re-lights easily after going out overnight, it’s possible it was blown out by a draft. If bent, the thermocouple cannot operate properly. Water Heater Pilot Light Keeps Going Out? Wipe the end of the thermocouple next to the pilot while you have access. The pilot is typically located inside fireplaces on one side close to the wall. I can light the pilot light on my Dearborn model DRH35ASTR-1N gas heater; however, after the furnace turns on for a couple of minutes, the furnace and the pilot light go out. Williams wall heater pilot light switch assembly part# 241973824 where is my on furnace millivolt definition what The access panel is located at the bottom of the furnace and is held shut by one or two screws. Slowly let go to make sure the pilot light stays lit. © 2021 Hot Point Heating & Air Conditioning LLC. Why does this happen? The pilot has a small opening in its end that can become dirty and clogged with dirt and debris. Close your access panel and set the thermostat on your furnace to your desired temperature. If the pilot light is not aimed correctly, simply bend the thermocouple to line it up with the pilot tube. If the thermocouple isn't lined up correctly, it won't read the flame, and will shut the valve for the gas. Cleaning out the pilot orifice means disassembling the pilot and clearing out the debris using a needle or compressed air. I replaced a really old wall heater with a brand new one today. There could be nothing wrong on your end. The only thing more frustrating than a busted furnace is the hundred trips to the garage for tools when you're trying to fix it. Look on the gas control valve for the gas control knob. A number of reasons can cause the wall furnace to not light, including a damaged thermocouple, a clogged pilot orifice and a disconnected gas supply. Harsch received her Certified Nurses Assistant license in 2004. Turn the main gas supply back on to your wall furnace. Wipe the end of the pilot with an emery cloth. She writes mainly home improvement, health and travel articles for various online publications. No problem getting the initial spark. A fierce, freezing draft sends shivers down your spine. Follow the gas line from the control valve to locate the end of the pilot. If removing and cleaning the thermocouple is something you're comfortable doing, perform this routine maintenance annually. If you suspect this is the case, or you have noticed that your pilot light simply will not stay on for more than a few seconds, turn the pilot light on and see if it is actually aimed at the thermocouple. Before conceding the cost of emergency repairs and calling an HVAC professional, read ahead for some of the most common reasons why your furnace pilot light won’t stay on. The first thing you should do when faced with fireplaces that won’t stay lit is to make sure your pilot light is lit. So, you have to turn off the gas, clear the tube with compressed air and relight the pilot. The thermocouple needs to detect the flame, otherwise it will shut the gas valve, and your furnace will not function correctly. Williams Wall Furnace Pilot Light Won't Stay Lit With the result of a blockage in the pilot tube, the Williams wall furnace pilot light won't stay lit. Sometimes it's referred to as the "flame sensor." The thermocouple safeguards against a catastrophic buildup of gas. The pilot light is supposed to be a strong blue cone, not a weak yellow flame. The pilot orifice may be full of dirt. When the pilot on your wall furnace does not stay lit, your furnace won’t heat. This started occurring after I did some gas plumbing and had to relight the pilot. When your pilot light will not stay lit for more than a few moments, turn the pilot light ON and be sure it is aimed at the thermocouple. If the gas fireplace shuts off after a few minutes, it's pretty much always going to be a pilot head issue, or a valve issue. The problem may be a genuine defect or it could be an issue with the sensor. The exact location and type varies by manufacturer. A number of reasons can cause the wall furnace to not light… If you can manage to get the pilot light lit for just a moment, inspect the flame. If you’re not eager to start tampering with crucial parts of your furnace system, furnace repair experts at Hot Point are just one phone call away to help you out. Read on for reasons why, and what you can do to fix it. Contact your utility company immediately. Not only does it prevent a furnace from operating properly, but an unlit pilot can also steal away the comforts of a hot morning shower. The supply line is near the furnace and has a cutoff valve to stop the gas flow to the furnace. Cecilia Harsch has been writing professionally since 2009. Even the slightest hiccup in gas supply to your furnace could be enough for the pilot to go out. The single-pole breaker operates the blower motor inside your gas furnace. This pilot light may not always stay lit, due to a variety of issues that may affect the gas supply or ignitor. Push in on the knob and turn the control knob to the “Off” position. It's a safety mechanism that shuts the gas off should the pilot go out. When the pilot on your wall furnace does not stay lit, your furnace won’t heat. How to Replace a Thermocouple on a Hot Water Heater, How to Adjust Gas Pressure to a Propane Furnace, Information on a Standing Pilot Gas Furnace, Don Vandervort’s Home Tips: Furnace Troubleshooting and Repair, Home Depot: Installation and Operating Instructions Manual Top-Vent Wall Furnace, How to Fix a Plugged Pilot Hole on a Water Heater, How to Install a Thermocouple for a Propane Wall Heater. Slowly release the gas control knob. Pilot Stays Lit But Heater Won't Come On If your heater isn't working but you can see a steady, blue pilot flame, the thermostat may not be signaling the heater to come on. Many HVAC techs will try to employ shady, scammy tactics to get the most money out of you. Open the access panel to reach the gas control valve and the pilot. Every time. Clean cloth. Get shopping advice from experts, friends and the community! If your furnace’s pilot light won’t stay on, the furnace won’t work. Your furnace may not be getting enough gas to keep the pilot lit. Cleaning the pilot on your wall furnace can get your furnace heating once again and save you from an expensive service call. Take note that it’s the pilot head, not the thermocouple. why won't the pilot stay lit on my gas wall heater when I turn the thermostat up? Shut off the electricity to the furnace at your main breaker panel. Williams Wall Heater Pilot Light Won T Stay Lit. Do-it-yourself maintenance and repairs can only go so far, unfortunately. You might be amazed to find out that the most straightforward fix for this is to light your pilot. The gas is flowing good. I have a Gas Wall Heater and the pilot won't stay lit. Hot Point furnace repair experts guarantee integral and trustworthy repair services. Keep holding the gas knob or button down for a minute or so to ensure the pilot light gets plenty of gas flow. The procedure for lighting a standing pilot always includes lighting the flame, then manually holding in the gas valve to keep the flame burning and give the thermocouple time to heat up. Then I move the know to the on position and then turn … The heater pilot light won't stay lit! A leak in the output duct of the furnace could cause air to blow into the area. The thermocouple is the copper rod the pilot flame directly hits. Pilot light won't stay on? A pilot light that won’t stay lit is more than frustrating. ONLY if you see that the pilot light is staying lit, turn the gas knob back to the On position. If you cannot locate the cutoff valve, use a gas meter key to shut off the gas supply to your house at the outside meter. The pilot won't stay lit on my furnace, when I release the button it just goes out. A faulty thermocouple may arbitrarily determine that the light is off when you want it on and vice versa. Hot Point Heating & Air Conditioning LLC. I've used this furnace for over 15 years without replacing the thermocouple. Dyna Glo wall mount propane heater won't stay lit (pilot light). The Pilot Light. You may be able to fix the problem on your own if you’ve got the tools and the wherewithal. Something's wrong. For more information about life expectancy, read this article entitled how long do water heaters … A bad regulator in your natural gas meter outside your home will affect all of the gas appliances in your home, including your furnace, dryer, stove, etc. 2. Turn off the gas to your wall furnace. Screwdriver (if necessary) Furnaces of various kinds are gas powered and use a pilot light to supply heat to the unit, including standard home furnaces and floor furnaces. Locate the copper rod near the burners. Locate the pilot light and look for the tip of a copper rod very nearby. This can happen on excessively windy days or nights. Show More. There is a chance that your thermocouple has simply gone bad and is the reason your pilot light won’t stay lit. Rotate the gas control knob on your furnace to the “On” position. First off, grab a flashlight and a screwdriver before inspecting your furnace. I turn the thermostat off, then after five or ten minutes the pilot goes out. If your furnace is still malfunctioning after you’ve repaired or replaced the thermocouple and determined the flow of gas isn’t a problem, you’ll need the aid of an experienced professional to figure out what’s wrong with your furnace. I turn the thermostat up and the unit kicks on and heats well. The thermocouple isn't too difficult to find. Attempts to re-light the pilot light are futile. © Copyright 2020 Hearst Communications, Inc. Ask around your neighborhood and find out if anyone else has had issues with their natural gas. When I hold in the pilot button to light it, it does light but when you release it the flame goes out. Without any gas supply, your pilot light won’t stay lit. I suspected the thermocouple and replaced it, but this didn't fix the problem. Unbend a paperclip to straighten it. Rotate the valve handle to the “Off” position. Water Heaters - Pilot light lit, but burner will not - The pilot light will stay lit, but the burner will not light. This means it can be a nightmare when your water heater pilot light won’t stay lit. The pilot light flame needs to completely envelop the top of the thermocouple rod so it knows the flame is on. It doesn't work, you need to call a repair person or install a new thermocouple yourself. On a previous post, someone suggested I clean the 2-inch long sensor. How to Clean the Pilot on a Wall Furnace. Standing pilot lights are common in older furnaces, but many newer furnaces have intermittent pilot lights or hot surface igniters. It won't cost you much. Hot Point Heating and Air Conditioning offers flat rate pricing on all of our Wisconsin repairs, meaning we charge exactly what we quote and don’t stray from it. If I hold the gas knob down it will only emanate a small yellow flame compared to the strong blue flame of last year. ... but the main burner won't stay lit when I flip the wall … A weaker flame won’t envelop the thermocouple properly. Contact professional furnace repair technicians at Hot Point for thermocouple repairs if you aren't so confident. You'll have to remove the cover, and chances are the lighting won't be working in your favor. What is causing the pilot light not to stay lit after the pilot button is released? I've tried that, but still no luck. Do This When The Gas Fireplace Pilot Light Won’t Stay Lit. That's the thermocouple. I replaced the thermocoupler and the gas valve with a new valve (ITT General Controls B67RA56) and nothing different, it still won't stay lit. She has several years of experience in the home-improvement industry, focusing on gardening, and a background in group exercise instruction. If your pilot light won’t stay lit, the thermocouple is very likely the culprit. Compressed air. by Emma (Sunrise Specialty Staff) If you’re not a technician yourself, then I can imagine that at that moment, nothing is more annoying than battling with a pilot light that won’t stay lit. Get in touch with your utility company if the problems persist. However, no matter setting I adjust the wall thermostat too the heater will not light at all. On the Williams 3509612 wall heater with the eletronic ignition. Even a slight residue can make the thermocouple malfunction. ... Propane Pilot won't light. Maybe the pilot stays on for a moment and the furnace attempts to fire, but almost immediately shuts down. When natural gas consumption peaks, the “gas grid” in your area may be nearing its capacity and lower the gas pressure intermittently. No matter the pilot configuration, the thermocouple will be near the burners—look for a removable metal rod nearby. For safety's sake, shut off power to the furnace by switching the breaker to the off position, and close the gas valve. Of course, if you want to make sure the job is done right with the least amount of risk, contact experienced professionals at Hot Point for furnace repairs ASAP. Here are the top five reasons your pilot won’t stay on, as well as methods to fix each issue. This is DIY furnace maintenance you can perform on your own to extend the life of your furnace and avoid emergency repairs. The fix here is as easy as removing the thermocouple, cleaning it with a wire brush or something coarse (even an ordinary dollar bill works), and replacing. Turn on the wall furnace circuit breaker. This is the thermocouple. Soot buildup on the thermocouple may block the flame. Push in the gas control knob and rotate it to the “Pilot” position. 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