I removed it and blew through the pilot hole. It has been working normally for the past couple of days. HiCustomerbr />It sounds like your boiler is not proving burner ignition. I called a service person and he couldn’t fix it without recommending we spend $500 to replace a part. Did the atraw trick today. Unfortunately, the aforementioned parts are no longer available. Through personal research and a DIY ethic, I managed to fix the fault in my gas fire. Any ideas? This is what a thermocouple looks like (though exact shapes and sizes may vary). The heat is then removed from the thermocouple, shutting off the gas valve. Near the end of spring the igniter would ignite the furnace and after 10 to 15 seconds, the flame would go out. No problem. Call in a gas engineer. If the pilot doesn't light, wait a couple minutes and try again. After a gas furnace opens the gas valve to allow gas into the combustion chamber, the furnace control board will monitor for proper ignition of the gas. When the pilot is lit, there should be two flames: one over the burner and the other (smaller one) touching the thermocouple. This, in turn, makes the gas valve shut off. Hi my portable gas fire gos out after a hour can you help. What happens when the furnace kicks on, blows warm air, and then shuts down before the room is heated? Thanks took a little while to find the hole o the oxypilot value all sorted now. Thanks for this tip. Replies: 6 Views: 1,268. joe-90 20 Jan 2013. I am at the end of my rope, I live in a medium side time and have called everyone of them with the Sam results. Thank you! They skip steps 3, 4 and 5 and light the burner directly. If no gas supply then not a boiler fault contact gas supplier. As its December I decided to try your trick with a straw. #2 Flame Rollout Switch. Your furnace has a limit switch that keeps it from running if the heat … Amazing. Tried doing this and will continue to try. Answer Save. But if this valve or its inner elements are damaged, it can’t deliver enough gas to your water heater, causing it to shut on and off. Thanks for the detailed advice! Gas boiler keeps turning on and off? 3. Ive followed all the intructions to relight boiler and it still wont stay lit. If you get dust in the pilot assembly and the pilot needs to be cleaned out, it produces a "lazy" flame, which will be disturbed by the draught of the main burners. Though I don't worry too much about carbon monoxide poisoning, I figured there must be some safety device to shut off the gas valve. Numerous visits from plumbers to no avail. IF YOU KEEP ON DOING THIS ONE DAY YOU WILL FALL ASLEEP AND NEVER WAKE UP. Sign up for FREE today. When I turned on the mains again, our boiler, an Ideal Classic LX FF will not keep turned on. Problem: Your furnace main burner ignites, the main burner stays on for 8 to 10 seconds, then shuts right back off. But “delayed ignition” is when the gas that’s sent into the combustion chamber isn’t ignited immediately. Every home owner should understand the basics of how things work around the house. This removes FUD (Fear, Uncertainty and Doubt). A faulty or blocked gas valve could also be the problem. Many, many thanks! Took 2 seconds and fire is working great! Any disconnect in allowing messages through will prevent the control board from allowing your furnace to work properly. Dirty Thermocouple. Says it all! A furnace that starts and shuts off over and over again is often described as short cycling. 3. The main reasons that a gas water heater automatically shuts off are because the pilot light goes out, the pilot light can’t start, or there are problems with the gas supply. Potterton Prima 40f - ignites, and then... goes out :(Discussion in 'Plumbing and Central Heating' started by dangel, 28 Oct 2010. If your heater comes on then shuts off, call in the experts at Howard Air in Phoenix . It worked perfectly as you described. I will try this when I go home as my fire has been playing up for ages which isn't good this weather. The fan continues to run even though the flames and pilot light go out. The limit switch keeps the furnace from running if the heat exchanger is too hot. No issues...so far. Thank you for the advice. Wintery weather just started. If the boiler works ok for the hot water then you can discount the pump- there is either a blockage in the central heating circuit or more-likely a stuck diverter valve. So it's best to do some research on your particular make and model before attempting any repairs. Thanks. Do I simply need to pull out the cheque book and call in the corgi guys. Decided to do the straw trick myself and the fire has been working perfectly ever since! #5 – No Power To The Boiler. This causes the pressure switch to react, which sends a message to the control board that all is in order. Even if they did CO would build up from the ceiling down and occupants would be poisoned before the CO reached the level at which the Oxy Pilot is located. Looked up the closest technician...is of course in Alabama!!! I have a Rinnai gas heater its starts but only last for for 3-5 mins then it goes out, Thank you so much for this, quick blow through a straw and my long stored Valor gas heater is now working perfectly again after I couldn't get it lit via the pilot, or to stay alight if I lit it with an external source. I followed your directions & the diagram along with the straws. Richard Scopes December 2011: it sounds like the probe that detects the flame. After I saw your post I figured I’d give it a try and it worked!!! My pilot flame is now blue rather than yellow just as you said. Your furnace is made up of many complex systems that all work together to ensure you have a comfortable temperature in your home. thank you, hope this saves me money I cant afford. The fire keeps on going out about 30mins to an hour. Big problem, right? Delayed ignition Imagine a room full of gas and then someone decides to light a match. If the pilot is going out, it could be a deffective combination valve, or ignition module. It was the part of the pilot flame normally pointing backwards to the thermocouple tip (and normally hitting it directly) that caused the fireplace to automatically "de-couple" since the thermocouple never got hot – a cold thermocouple means that the fireplace thinks the fire is blown out and it stops the gas inlet for for safety reasons. Took logs back out ,tried the straw trick and voila it's working great ! IDIOT. Many things in your home lend themselves to DIY; your furnace is not one of them. Before attempting to locate the cause of the leak, stop the water supply and turn off the central heating. Thanks for sharing the information. Now my fire is working perfectly again. 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