If the pilot doesn't light, wait a couple minutes and try again. Some common causes include issues with the thermocouple and pilot tube. Be sure to call us at 770-872-4171 if you’re in the market for a new furnace. Dirty TC( thermocouple), faulty TC, pilot flame to not set properly/small or not close enough to TC, partially plugged pilot tube, faulty/bad gas control valve, all could cause pilot not to stay lit. https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-1219.pdf. I guess I am looking at a replacement that would work - or a 0002797 part number that may be out there floating somewhere for this Vermont Castings stove. Jeff_133 Member Posts: 36. Note: You must have the pilot lit and the burner on to test for leaks, so that gas is flowing through the large tube. Cleared gas chamber of debris, Replaced thermopile/pilot assembly seemed to get more gas to pilot. Another possible reason why a pilot won’t stay lit has to do with the flex tubing. Then, when the pilot is burning brightly, release the reset button. The thermopile (connected to terminals TH and TDTH) puts out 470 mv after 30 seconds and 750 mv after 1 minute. A flame sensor lets your furnace know that the pilot was successfully lit. Originally published January 2014, last updated September 2019. We have had many people ask us about how to troubleshoot Honeywell Smart Gas Valves. Water heater was working fine till this morning. The most likely of those is that the thermocouple needs to be replaced. Locate the pilot valve. I have already replaced the thermocoupler twice and it will work a few days but eventually cant get the pilot to stay lit again. Most of the time you can just pull down on them to pull them out of a spring clip that holds them in place. According to the EPA, the new Energy Star furnaces can save about $100 a year in energy costs. If your pilot light ignites but won’t stay lit, then the problem is most likely related to your thermocouple, a metal sensor (about the size and shape of a sharpened pencil) that heats up by direct contact with the pilot light’s flame, telling your gas valve that the pilot light is lit so it’s safe to open the valve to let gas flow. Sometimes, this tubing will get kinked in places which will prevent proper operation. Butane grill lighters work well also. Observed that the pilot light is lit … With cooler temperatures just around the corner in Newnan, GA, you’ll want to be sure your furnace will be ready to keep you warm. Once the pilot stays lit, turn the pilot valve to the on position. Sometimes it's referred to as the "flame sensor." Have you got the stove's serial number? I've had this unit since I bought my house 12 years ago and would have been installed way before that. The system kept coming back with 4 flashes. If so, it will not face the pilot light. If your gas water heater doesn’t stay lit, you may have a defective control thermostat. We'll see because he said the value might be spendy. As a result, the pilot doesn’t get enough fuel to stay lit. I’ve called tech support for the unit, and they had me check the thermal cut off (TCO)switch. thanks. Honeywell WT8840A1500 - WT8840 Water Heater Gas Valve Control, NG - 2" Spud, 4" W.C. - WATER HEATER GAS VALVE, STANDING PILOT WITH PIEZO, SETPOINT 55-155F, SPUD LENGTH = 2", BRACKET= OFFSET, REGULATOR SETTING= 4" W.C., GAS TYPE=NATURAL GAS The WT8840 series is the Water Heater Control for trade use to replace WV8840 valves used in AO Smith and … Try leaving the valve in the pilot position for a good few minutes before making that final 1/8 of a turn to the ON position - and make sure any control switch, t'stat or remote is in the OFF position when you do so. Get your match ready. Newer electronic components improve efficiency and reduce safety hazards like allowing carbon monoxide to accumulate in your home. Turn the control valve to “on”. Keep holding the "Reset" button for one minute after you light the pilot. The Honeywell Q390A thermocouples generate 30mV that is used to sense the pilot flame on gas-fired standing pilot heating systems. Bent thermocouple: Sometimes, when your gas water heater won’t stay lit, if you check the thermocouple, you may see that it has been bent. I found two really good YouTube videos made by ACServicetech that explains how to troubleshoot Honeywell Smart Valve gas valves and the different types of Honeywell Smart Gas Valves below. Our top brands are engineered with the most advanced technology and offer optimal indoor comfort. Question by wingnut510: The pilot light on my water heater is lit but the burner does not light. This control is part of the gas valve assembly and normally has a dial that will allow for temperature adjustment and will also have a probe that monitors the water temperature. Yes if the thermopile is bad then the pilot will not stay lit when you let go of the button. I've got an urgent situation. The pilot won't stay lit on my furnace, when I release the button it just goes out. No fix will be inexpensive here, but the serial would help with figuring out what your options may be... 39B25E8A-293B-42E7-8DE1-943AB026A2EA.jpeg, BFA1D4DD-737A-4B73-B4FF-F440B5C886A6.jpeg, 888A5D3F-13C0-4D03-AAC6-F91D1E8DD757.jpeg, 1234B877-B08C-4178-8C84-62510FCE5D3A.jpeg, 8C7B60B8-597B-4349-A812-70251BA441D1.jpeg, Home Made Pellet Stove Controller (2).JPG, 71A87E55-8AA5-4F49-99FE-9B2E3AE0DDC2.jpeg, B51E5072-2B82-4EE7-98B9-A2C979813827.jpeg. Upgrading can be a good option if you can reasonably expect your home’s furnace to last for at least five to ten more years and it isn’t plagued by any other glaring issues. Different thermocouples get replaced differently. Push the red "Reset" button and hold it down while you light the pilot burner with a match. Some common causes include issues with the thermocouple and pilot tube. There are often telltale signs to alert you that it may be time to replace your furnace. Must present coupon at time of service. FYI: One of our customers said that his draft inducer would not start and it was the Honeywell … An overabundance of water can corrode or clog your pilot line. Pilot won't stay lit! Starting up after summer. No gas = no status lights. If the pilot tube is dirty, let the furnace cool down and turn off the gas. The gas valve sends gas to the main burner(s), which is lit by the pilot light. Cannot be combined with any other offer. Check the attached links troubleshooting,instruction, Good luck. It could simply be that the thermocouple is bent. Blow it out with a can of compressed air (WEAR SAFETY GLASSES!). The gas supply to the pilot assembly is controlled by this valve. If you have an older model furnace with a standing pilot light, you can follow this basic procedure to relight the pilot flame. The thermocouple detects the pilot light via sensors. JavaScript is disabled. January 2009 in THE MAIN WALL. Step 3: If the pilot flame won't stay lit after several tries, it should be adjusted by a professional. Test for Gas Leaks. Don't try to adjust the mechanism or tamper with the gas line. Water Heater Gas Valve, Standing Pilot With Piezo, Brand Name: Honeywell. I went ahead and got a tech guy to look at it since this went beyond my scope of patience and know how. This tubing connects to the gas controller and will ensure a steady stream of gas. Read on for reasons why, and what you can do to fix it. The thermocouplers dont look too burnt when I take them out. The WT8840 series is the Water Heater Control for trade use to replace WV8840 valves used in AOSmith and Bradford White Water Heaters. Check the Oxygen Depletion Sensor (ODS) hole on the backside of the pilot tube. This pilot light may not always stay lit, due to a variety of issues that may affect the gas supply or ignitor. Do you hink I should go get a new VR8200A gas valve? It is designed for use in Standing Pilot applications using an immersion well for water temperature sensing. Clogged Pilot Line: Burning gas can sometimes release moisture. Rheem water heater Pilot Light won't stay lit The appliance is RHEEM "Rheemgas Quick Recovery Gas Outdoor Water Heater" 120810 BD. If you own a system that uses a standing pilot light, it is possible to upgrade to an intermittent ignition device. Bradford White 50 gal unit (Mod. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. The pilot light is lit by an electronic spark. So, a pilot light that won't stay lit is often the result of an old and weak thermocouple. This will prevent the pilot light from heating it. This is another relatively small piece of your fireplace that converts heat to electricity, ultimately opening up the gas valve when you turn on … It's generally about 1/16" to 3/32" in diameter & can get plugged with dust, pet hair & the like. Hold it down for at least 30 seconds in order for the thermocouple to get warmed up. No gas = no status lights. When you depress the button it bypasses the thermopile. Sometimes, this causes the pilot light to stay on for only a few seconds. If the pilot is hard to reach, you may have to use a long fireplace match. See attached pic of pilot unit. My pilot light wont stay lit on my Honeywell VR8200A gas valve. How to Fix. I checked the voltage from the thermopile: 750 millivolts with pilot light lit while holding in the button. Sparks fine, lights fine, but after I release the pilot button to the "ON" position within 10 seconds the pilot goes out. You can try bending the thermocouple back into position. If you have a direct ignition furnace, you won’t have a pilot light. The thermocouple is the copper rod the pilot flame directly hits. Thank you. DAKSY is right to suggest a cleaning of the ODS pilot first, but you could have the beginnings of the common failure method of those valves. Today’s models have longer lifespans and are considerably more efficient than older models. Thankfully, a dirty pilot tube is the easiest issue to fix. # MI5036FBN) wasn't giving hot water, pilot light wouldn't stay lit and water was leaking from bottom of gas valve (this part). The gas valve opens and sends gas to the pilot burner. Bradford White 50 gal unit (Mod. Bradford White 233-47845-05 - Natural Gas Pilot Assembly, 17/26 Honeywell - Natural Gas Pilot Assembly, 17/26 Honeywell If this is the problem, then unkinking the … Plugged or Damaged Pilot Burner: Similar to the pilot line, the pilot valve light itself can become clogged. It uses a Honeywell Millivolt Hi-Low gas valve ((VS8420) with a remote wall switch (no thermostat) I checked the switch and it and the wires are OK. Yes Heatsource I am pretty sure he did those tests. Relight the pilot light. The thermocouple detects the pilot light via sensors. Based on the “Status Light Code,” it means “Temperature Exceeded.” It made sense as we had a heat wave recently. If your pilot light won’t stay lit, the thermocouple is very likely the culprit. This started occurring after I did some gas plumbing and had to relight the pilot. Pilot light won't stay on? Country Of Origin: Mexico Product Dimensions: 6.0 X 6.0 X 4.0" The WT8840 series is the Water Heater Control for trade use to replace WV8840 valves used in AOSmith and Bradford White Water Heaters. Furnace Pilot Light Troubleshooting. Always turn the valve knob to the off position and make sure to wait at least several minutes for any residual gas to clear away. # MI5036FBN) wasn't giving hot water, pilot light wouldn't stay lit and water was leaking from bottom of gas valve (this part). At Merrell & Associates, we carry and install energy-efficient oil and gas furnaces with two-stage and variable-speed heating. It’s a box-shaped device and is typically located near the gas burners. Hi all. A faulty thermocouple may arbitrarily determine that the light is off when you want it on and vice versa. Call Merrell & Associates for complete details. Once it has cooled, the pilot tube can easily be cleaned. 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For the unit, and then your water heater doesn ’ t stay on, the went.

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