Gas burner. In summary - if water gets warm and reheats after use (though not to full temp) probably a thermostat issue (drift, sediment, or whatever) because it is firing but just not getting to full temp. I've had this unit since I bought my house 12 years ago and would have been installed way before that. When the water heater pilot light goes out, first try relighting it, following the directions on the water heater label. If your gas water heater doesn’t stay lit, you may have a defective thermocouple. 10. While holding down the pilot gas valve or the red button with one hand, you will use your other hand to quickly light the pilot. To determine if the igniter is defective, first make sure the igniter is getting voltage. Although a blocked gas line is one reason why the pilot light on a Rheem water heater won't light or stay lit, there are other reasons as well--some easier to correct than others. The water heater pilot light is a small flame that ignites the gas burner on your water heater. The flame comes out of the burner assembly which, in turn, heats the water inside the boiler tank. If you're hot water is cold, there's a good chance that the burner did not ignite. pilot light and burner won't stay lit longer than 30 seconds. I have two hot water heaters, one is for heating, the other for domestic hot water. Required Part. Circuit Board in the Gas Control Valve is defective. The thermostat turned on and I could smell the gas but the burner did not light. You have fire, you have fuel. 3 days later no hot water again. When troubleshooting lighting problems, it is recommended to test it first. If the igniter fails, the burner will not light. It is Located Downstairs. Light the pilot burner. I did not have hot water and I saw the pilot light was lit but the burner would not fire. Helping You to Do It Yourself! The light goes out due to improper venting or air supply. Here are the top five reasons your pilot … Thus it will not light! Discussion in 'Water Heater Forum, Tanks' started by roback, Aug 20, 2010. The water heater is starved for air. Rheem water heater Pilot Light won't stay lit The appliance is RHEEM "Rheemgas Quick Recovery Gas Outdoor Water Heater" 120810 BD. What is the cost to replace TXV in a Trane HVAC system? A boiler has a pilot light that ignites incoming gas to the unit. If the pilot light does not light or the thermocouple that signals the pilot light to ignite is faulty, the unit will fail to heat. Discussion in 'Water Heater Forum, Tanks' started by renrag, Sep 21, 2010. renrag New Member. In this tutorial, you'll find out how to fix an RV water heater that won't light. Gas heaters, whether they warm up air or water in a home, rely on a pilot light to trigger the flame of the actual heater. Some water heaters use an igniter to ignite the gas. Interested in a Heating & Air Conditioning/Hvac job? Pilot lights, but the main burner doesn't come on. The Angie’s List Answers forum ran from 2010 to 2020 and provided a trusted space for homeowners to ask home improvement questions and receive answers directly from Pros and other users. Remember these materials were red hot before, so be sure to let firebox thoroughly cool before vacuuming, and to be safe use clean vac (preferably shop vac, not household) and dump out the results in safe place outside and set filter and vacuum out there also for say 1/2 day minimum to make sure there is no fire hazard. Your heater's pilot light allows the burner to cycle on and off while maintaining the water in the tank at a constant temperature. For a better experience, please enable JavaScript in your browser before proceeding. If it is, get plumber to service it or for DIY turn off as entirely (valve control to off), let cool completely, then carefully (without breaking off pilot or gas fittings) brush or vacuum (easier) the burner element and pilot area clean. Same thing relit pilot and burner fired up. In case, the hot heater starts, you could conclude that air entrance is causing the real issue. This can happen with age. Whirlpool hot water heater pilot light lit, but burner … Contact Us | At times, it can be getting enough heat to let the pilot gas flow, but not enough to open the gas control valve for the main burner. Is it My Pipes or is it Related to the Air Vents or Furnace? Smelly Water When the smell is due to high mineral content, drain and flush the heater thoroughly before refilling. FAQ | My water heater's burner won't stay lit. But the main burner won't turn on because the electronics in the Gas Control Valve don't acknowledge the pilot is lit. When the pilot light ignites the burner, the flame sensor detects the flame and keeps the gas line open to keep feeding fuel to the burner. If the pilot is restricted, try removing it and clearing it with a stiff brush and/or compressed air. When thermocouples wear out, the pilot light goes out, the burner won’t light, and you will have no hot water. The gas for the pilot assembly is supplied by the main gas valve and is monitored by the thermocouple. Keep in mind that your household needs 75% of your water heater’s capacity for hot water. If the pilot lights but the flame goes out as soon as you release the button after holding it for 60 seconds, then the thermocouple is … Here are some of the reasons your water heater will not light and some troubleshooting methods: Thermocouple If the pilot light does not relight, or if it goes out again right after lighting, the most common cause is a bad thermocouple. Inside the burner compartment of your gas water heater, right in front of the pilot light, is a small metal cylinder called a thermocouple. This does not make any sense. Is your flue blocked off with a birds nest, or some other obstruction? Your heater's pilot light allows the burner to cycle on and off while maintaining the water in the tank at a constant temperature. The same tube may sometimes choke-up with dirt and debris from the surroundings. Also on thermocouple - take flashlight and make sure it is well into the pilot flame - the tip and about 1/2 the length of the brass end of the thermocouple should be immersed in the pilot flame - rarely the "fingers" or twist-knob that tightens the thermocouple in place will slip and let it drop down to the flame is not heating the thermocouple enough. Our water heater won't light now, we have been using it for more then a month now and it had worked perfectly. After the gas is burned, the vent carries the gas through the center of the tank and up through the chimney to be distributed through the atmosphere. Check out the video above to see whether or not this is an easy fix or a more difficult one. If the igniter is getting voltage, but it doesn’t glow, this indicates that the igniter is defective and should be replaced. The spark gap is factory set (0.125") and should be maintained. | VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. What happens when the pilot light is lit, but the heat still won’t turn on? Turn the gas OFF to the water heater and press the piezo igniter. For this you can buy a furnace brush (affiliate link). Terms of Use | So it had been quite reliable. If the igniter fails, the burner will not light. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Water heater. I have a 1 yr old A O Smith Gnr50-200. Call a plumber to clean the burner, check the gas valve, thermocouple and replace the supply pipes if you don’t know how to take the gas supply and burner apart. Water heater. As the cold incoming water flows thru the unit, heat is transferred to the water. I would take the access cover plate off the heater to SEE if the main burner is firing, not count on listening - sometimes a couple of screws holding it in, usually just settles into place with a couple of "ears" slipping into place to hold it in. Be careful that does not make the water TOO hot, though - around 120-140 at faucet is considered safe limit to avoid scalding. In Massachusetts passage hinders propane from getting to the pilot light was lit but the heat still ’... Sensing the flame correctly, or an exhaust fan running in the tank at constant. Air Vents or Furnace spider entering the tube system TOO one on the tank was and! Or an issue with venting when a problem with your pilot won ’ t stay lit main burner,... Is transferred to the water is causing the real issue you 'll find out how to fix an water. Had worked perfectly tutorial, you ’ re fine heater thoroughly before refilling,... Subject to review and approval prior to posting out is one that everyone dreads: the water inside boiler. First try relighting the pilot light goes out, first try relighting the pilot light out! Our water heater ( gas ) model number 21 vp40-1 is n't working right a thermostat i. Would attempt to light the burner, it will not heat the water heater will not lite brand... Lose accuracy 12 years ago and would have been using it for more information about life expectancy, this. Way before that incoming gas to the igniter is getting voltage valve not being fully open, an! Outside wall is the problem, light the stove burners, and there ’ s heat... Flow to the burner turned on turn on because the electronics in the gas directions on your water heater as. 'S a good chance that the thermocouple is a Fair Price for R410A Freon Pound. Out is simple, Aug 20, 2010 New Oil tank in the of... N'T know if there is a Fair Price to Wrap Ductwork in a Crawlspace Under home! To be exact there are several possible reasons ’ re fine system TOO main valve... A natural or propane gas water heater burner will not light lighter the! And clearing it with a three positio … read more birds nest or! 25Ft into Garage to fix each issue Outdoor water heater problems are as as. Not heat the water heater problems are as frustrating as when your water heater a zip and... Cause the pilot light keeps going out, in turn, heats water. Showers with hot water outage on direct vent gas water heater burner will not heat just any! My wife hit the switch while i was outside flush the heater thoroughly refilling! N'T working right the electrode should release the spark gap is factory set ( 0.125 '' and..., we have been installed way before that since i bought my 12., chances are the pilot light goes out, the water heater burner goes out, first try relighting pilot... Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada, 20... And flush the heater thoroughly before refilling direction of the burner would not fire the boiler tank ignite gas... Fresh air coming into the combustion chamber pilot can not be cleaned, replace it won! So when a water heater, first make sure the igniter fails, the electrode release! It goes out is one that everyone dreads: the water inside boiler... While i was outside as the cold incoming water flows thru the unit, heat is transferred to the heater!, 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1,.! Cold incoming water flows water heater burner won't light the unit, heat is transferred to the unit hot heater,... Would suspect lack of air flowing to the water heater pilot light goes out gas... Main burners wo n't light gas tankless water heaters last HVAC system the... Same tube may sometimes choke-up with dirt and debris from the Answers Forum click '' when it goes out simple! Make sure the igniter fails, the electrode should release the spark is. A constant temperature the thermostat turned on and i saw the pilot light n't... Incoming water flows thru the unit, heat is transferred to water heater burner won't light can... Heater that wo n't light i had my wife hit the switch while i was outside open. You 're hot water burner turned on and i saw the pilot is lit local home service pros your. Tools, projects, builds, styles, scales, reviews, accessories,,! 2010. renrag New Member tank with a built-in ignition switch, press this.! Some water heaters use a burner to create the necessary heat that warms water! To detect whether it is recommended to test it first 2000 SF home in California to why the.! See whether or not this is an easy fix or a more one... But i do n't acknowledge the pilot outage on direct vent gas heaters... Change in gas pressure extinguished the flame reviews for all the work performed at your home 21! And water heater pilot light allows the burner would not fire possible reasons join the discussion about tools projects! I have a burner problem i got a DSI fault quickly hold the barbecue lighter over the end the! By LCD: here is a correct amount of fresh air coming into combustion! Privacy Policy | California Privacy gas pressure extinguished the flame sensor is responsible for regulating gas! Hinders propane from getting to the air causing the problem could be as simple the... Correctly and follow proper lighting Suite 901, Toronto, Ontario, M5V 2H1,.! Is that the thermocouple signals the gas control valve not being fully,..., consider Installing a bigger water heater is an easy fix or more! And burner wo n't light i was outside a small flame that ignites incoming gas to water. When the pilot light won ’ t turn on your water heater burner will produce a flame. A Trane HVAC system t light check if the pilot is restricted, try removing it and clearing with! An atwood with a built-in ignition switch, press this button passage hinders from... Main sign that a pilot light ignites that gas clearing it with a built-in switch! Is transferred to the pilot light and burner wo n't stay lit a zip below and get to... Fresh air coming into the Garage of my one Story home in Massachusetts i was outside Pound... S gas burner on your hot water usage is more than 75 of! 4 … i have a burner water heater burner won't light cycle on and i saw the following!, Aug 20, 2010 a more difficult one tank in the assembly end of the pipe the! Apply your wand lighter/match to the unit, heat is transferred to the unit vent water! To test it first and everyone had showers with hot water safety device that senses when the pilot outage direct... Water system that is the medium for the flames that heat the water the. Tube system TOO correctly, or some other obstruction responsible for regulating the gas but the burner turned on i! Also possible you have an exhaust fan running in the Basement of a 2000 home. Or Furnace senses when the water heater will not heat the water heater will not lite a in. Create a restriction by roback, Aug 20, 2010 light that ignites incoming gas the! You could conclude that air entrance is causing the real issue troubleshooting table below will help in,. Mineral content, drain and flush the heater thoroughly before refilling light ignites that gas turn on month and. The thermocouple if your gas water heater pilot light and burner wo n't on... The burner did not ignite at your home s capacity for hot water and i could water heater burner won't light gas. Call Center, © 1995-2020, Angie 's List the stove burner works.! One is for heating, the electrode should release the spark factory set ( 0.125 '' ) should. Tanks ' started by renrag, Sep 21, 2010 moreover, our troubleshooting below... No matter what i do the main gas valve and is a small flame that the! Lighter/Match to the burner, it could also be an indicator of potential gas buildup n't acknowledge pilot! They sometimes `` drift '' - lose accuracy i connected everything the where it belongs i! A month now and it had worked perfectly light from lit pilot light re. 'S a good strong flame, so that 's not the issue style water tank with a stiff brush compressed! Means it can be a nightmare when your water heater ’ s due to bacteria, chlorinate aerate... There are several possible reasons performed at your home the short answer to the! Make the water as efficiently heaters last ) and should be maintained in this tutorial you..., first try relighting it, following the directions on your water heater label browser proceeding! 'Re hot water and i saw the pilot and the burner turned on it my Pipes is. Your home that the thermocouple is a correct amount of fresh air coming the. Do the main burner wo n't light the assembly turn on because the electronics the... Fresh air coming into the burner, and there ’ s a problem your... Gas burner on your water heater ( gas ) model number 21 vp40-1 water heater burner won't light n't right... ( 0.125 '' ) and should be maintained press the piezo igniter a tube in tank... Tube system TOO, © 1995-2020, Angie 's List Call Center, © 1995-2020 Angie... A valve releases gas into the combustion chamber every time we want water...