Schedule a routine maintenance furnace check once a year. Each furnace’s flash codes are different. Replaced gas valve and operates perfectly. There are some very simple troubleshooting steps, that anyone with even a light mechanical background can do themselves. If you’ve checked the breaker and are satisfied, the next place to go is to the electronic ignition check or perhaps a fuse depending on your model of fireplace. A gas furnace burns a mixture of air and natural or LP gas. Then, turn up your thermostat past the room temperature, and see if the furnace fires up. 10 Answers. My heater will not light, what do I do? With an electronic furnace igniter switch, your furnace is safer and does not use the small amount of gas that a furnace with a pilot light does. For those uninitiated with gas fireplaces, it may sound confusing to hear that there are electronic components within. You will also hear a clicking noise that is a sign your heater system is trying to come on. A fireplace can be a focal point to any room that it is in. Your pilot light is located to one side of this tray just slightly above it usually. If it continues to extinguish the flame, replace the vent cap; if you don’t have one, call in a service technician to perform the installation. If there’s no key there, like the one below, then perhaps the manual has it. Slowly turn on the gas at the tank. Unfortunately, there are times where the fireplace just doesn’t work. Is gas coming out of the burners when turned on, but burners will not light? 2. New thermal coupling was put on, when I let the pilot button go the flame get really low, but stay’s light, when I turn on heat piot goes out. If you can clean it, you can replace it. Pro Tip: Try to get a new furnace filter in the next 24-48 hours to prevent a lot of dust from coating the blower and other internal parts. Read our How to Troubleshoot Top 12 Furnace Problems for more info. Of course, when your gas furnace fails to ignite you can pick up the phone and call your HVAC repair person. Check the resistance of the igniter. You may have moisture in the burner ports from cleaning or a spill. Take it out and then go to your local HVAC supplier and have them match it up with a new thermostat. Yes. Remove the two screws holding it in place, and gently pull it out with or without detaching the wires. 1. If igniter works then switch is at fault. Should you replace one of those components, turn the breaker off all the way and then back on again before trying it out. The second problem is quite a simple one, the wire that is position in the gas to spark it, is metal, and metal can move in heat, so if you see a spark but it takes while to light, then the reason is because the spark wire has moved away from the gas, so it will not light until more gas has entered the fire and makes it easier to spark. If the spark electrode is defective, replace it. Either issue will prevent the fireplace from remaining lit. 3. Check the service instructions that come with your fireplace. Some but not all of the gas fireplaces out there will come with an electronic ignition. If gas is reaching the fireplace, but it still won’t light, the next step is to light the gas jets on the gas logs, manually, following the manufacturer’s instructions. Cleaning your hot surface igniter requires a small screwdriver and fine-grit sandpaper made for metal. If your fireplace is new, there may be what is known as “off-gassing,” caused by residual factory paints burning off. Fortunately, the thermostat on your gas furnace controls is pretty easy to replace yourself. Any suggestions would be appreciated. I have a situation where the first time you turn the system on it ignites fine. If you don't see any spark when you attempt to relight the pilot according to the instructions on the appliance, then don't bother worrying about whether the gas is getting to the pilot or not because I think you should see the spark regardless. What is the Best Temperature to Set Your Air Conditioner On? This is an important step for propane gas users because if you call an HVAC technician before doing this they will charge you for a service call. The sparking tip of the ignitor must align with the opening of the lighting tube or fuel may not reach the spark gap. my truma 3002 gas fire wont light .it has the electronic ignition with a new battery but still no spark Answer. Ducane Ng furnace, sometimes fails to light, but turn circuit off and back on always restores operation. Most people know when the cold season in their area is. Anything less than a 25 millivolt reading and the thermocouple will require replacing. First and foremost, ensure that there aren’t any potential fuel issues keeping your fireplace from lighting. If the burner was not used for a while, increased clicking can occur. When they’re getting power, they begin to glow, eventually becoming red-hot, hot enough to ignite gas. The experts in the article say that could be an issue with the thermocouple. Try lighting the pilot. Answer Save. If your gas is on but the pilot hasn’t been lit in at least a few months, you will have to purge all of the air out of your pilot tubing. There are some things you can do to avoid this scenario and to keep your furnaces ignition in tip-top working order. If it reads higher, consider it bad and replace it. 2. If this doesn't work give it a second try. Thankfully, there are a few ways to isolate the thermocouple and determine its operational status. If these fail to do their job your furnace will not come on. It can be a very frustrating experience that literally leaves you out in the cold. In order to do this, you will need to hold down the pilot button for anywhere from 1 to 3 minutes; doing so allows the air to bleed out. An orange or yellow spark as opposed to a clean bluish-white spark means that the igniter needs to be replaced. We can’t emphasize ‘gently’ enough because the igniter tip is very fragile. 2. 2. For this reason, leaving the pilot light on is the best idea. First of all, you need to go out into your yard and locate where your gas storage tank is. There will also be a gas pressure gauge. Hi, I have a Baxi Bermuda inset boiler with a coal-effect gas fire. The first place to start when your pilot light is on but you’re still not getting a flame is with your breakers and fuses in a modern home. Surface burners are often slow to light or will not light at all because the burner or burners are wet or dirty, the electrode is not seated properly, or because the burner head and cap are not matched up properly. I hope you get it figured out. One of the most common problems on forced air gas furnaces is their failure to ignite and come on. First, yes, the igniter is commonly called a hot surface igniter or even a glow plug. That, however, does not mean they are bulletproof and will always come on and work when you need them. The alternative is to save yourself some money by trying to repair your furnace ignition problem yourself. Did you ever get an answer ? If that does not work then you have a bigger problem. Any ideas chaps? If you smell gas near your furnace when you turn it on there is a good chance that your gas supply is not the problem. To install it just reverse the process you used to take it out. If a cold draft blows the pilot out on a regular basis, relight the pilot and check out the vent cap. I know not to mess with Gas Fires, but I have a Brilliant Sensation Gas Fire. If the pilot light starts to flicker and looks like it may light but then simply burns out, the thermopile is usually the problem. If the logs light and stay lit, that proves that you have a supply of fuel and that the jets in the fire logs are not plugged by carbon build-up. Bypassing the ignition. Take the cover off your furnace and look for one or two lights. When you stop and think about it, technology is pretty great. If it shows about 120 volts, there is power to the igniter. Sometimes it will light ok but usually he has to leave it for hours. Your range repairman will ignite the stove with the lights off to test it. One of the most common problems when a fireplace is not on a loan breaker is overloaded circuitry. I’ve heard about furnace flash codes. We developed this Free Local Estimate Tool (supported by Networx). If you suspect the smell is gas, and the pilot light is on, you may have a gas leak. There are also issues with insects and spiders that lay their nests inside of the pilot tubing, particularly in rural areas. 4. Some codes definitely relate to furnace ignition problems. First, hold down the gas control button while also holding the end of your lighter or lit match towards the end of the pilot tube. The process is relatively simple and can save you in a jam. Here’s the full guide. Save yourself the cost of a gas fitter call out. This will keep you from getting any big surprises when they give you the furnace repair bill. Turn power off,then repower. If the power is fine, check the electronic ignition or possibly replace the fuse. If you can determine that the igniter isn’t bad, it is more likely that you have a worn-out thermocouple. Lv 7. If igniter does not work the we would replace the igniter box. If the flame lights and only goes out after releasing the gas control knob, however, that’s a prime sign that your thermocouple is malfunctioning. My gas fire may light but it will not stay alight. Basic troubleshooting will lead you to the answer 9 times out of 10, allowing you to solve the problem or at least point the service technician in the right direction. I reckon it could be a faulty valve not letting the gas through now and then. I am puzzled. At this point, it’s best to call a trained HVAC professional. After a minute or so, place a lead on the connector and the other lead on the shaft of the thermocouple. Unfortunately, when the thermopile goes bad, that’s a repair that has to be performed by a professional service. First, you need to turn off the gas to the furnace. Unscrew the thermocouple. This feeds the gas through to the igniter to get the fire lit, and can frequently get blocked up with grease or any other kind of debris. Often times the reason air does not get to your furnace’s igniter is because it is restricted. The entire point of the thermocouple is to keep your pilot lit. 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