I also checked for power to the gas solenoid, and I”m getting the 24V signal. This fall has been one of the worst for air quality in our nation’s history. Required fields are marked *. Call now or click on the button below to schedule a service today. God bless you and your family today and always! I’m just worried about if its a gas issue. I hope you can easily find and fix the problem. I turned it off sat breaker and on again and now no glow plug lighting up. Make sure all registers are open and unobstructed. But, again, I don’t know the correct voltage, so perhaps someone could assist me to know the proper voltage. You should have 24 to 28 volts AC between R and C. If you do not then you have a low voltage problem which could very well be a low voltage transformer that is burnt out. I assume that your draft inducer is running but the ignitor will not glow. Below we have a picture showing a cracked ignitor. I checked the pressure switches for continuity and they all perform according to design. Hi Steve, Thank you for responding. Thanks. This is typically located near the burners. Hi John! Minus 31 how awful! If any of the safety controls are open then the control board will not allow the ignitor to glow. If this is the case, then the first thing you should do is turn off your motor and allow it to cool. The furnace hot surface ignitor does not glow. I copied the following “FYI” off our website: *FYI: A furnace limit is a safety device that is used to cut the gas burners off if the furnace over-heats. Resetting it with the main electrical switch doesn’t get it to power the ignitor, so it’s probably not the limit switch, either. About half way down the following page we discuss why ignitors go out prematurely: https://arnoldservice.com/gas-electric-furnace-troubleshooting-simplified-2/ If it turns out that you need a control board then our Luxaire program shows that your furnace uses the S1-33103010000 control board that we sell on the following page: https://arnoldservice.com/product/s1-33103010000-york-furnace-control-board/ I hope you can easily find and fix the problem. I do not know what the ohms reading should be on your ignitor but many of the silicon nitride ignitors ohn out with lower than expected ohms. Although this may seem obvious, be sure your thermostat is set to heat and that it's actually colder in your house than the temperature the thermostat is set to. But I’ve just never seen anything like that before, nor can I find any guides about what to do when it won’t go out. I tightened all the breaker screws and we have not had any problems. It may take a few minutes to start running even after being lit, so be patient. I’m handy enough to replace a control board but would like to avoid it. Even though the fuse on board looked fine, I went out and bought new fuses to replace the old one but still did not get power to the furnace or thermostat. The inducer motor spins fine, and looks like the voltage at the pressure switch is ok. Don’t know about the limit switch – could that be it? If not then you have a high voltage problem. Steve. ALL THE SERVICE - MINIMAL CONTACT, Click here to learn more or click here to watch. I would strongly suggest that you make sure that the fuse is good on your control board and make sure you are getting 24 to 28 volts AC between the R and C (com) terminals of your control board. Sorry to hear that you are having heating problems. I checked the resistance and got a 10.2-ohm reading or 100 ohms I don’t remember as I was working on a customer’s unit. Make sure that your pressure switch is staying closed. Hi Jeff! After starting the furnace up after the ignitor replacement I see and hear the ignitor not making good contact with some control on the furnace making some weird noises. If the furnace is experiencing problems that could result in a fire, it may fail to ignite properly. I would make sure you are getting 24 volts through the limit, rollouts and pressure switch if you have not already tested these safety controls. But what I noticed next was that it stayed on the entire time the furnace was lit. It is very quiet. The part number for the DSI is 43K3101. This … The company has affordable high-efficiency furnaces that are suitable for many homeowners, - Furnace repair service heating installation HVAC ac repair heating rebate Hot Water Tanks, Boilers BC Furnace Vancouver Burnaby Surrey Coquitlam Richmond White Rock Maple Ridge Port Moody Delta Abbotsford Aldergrove Pitt Meadows North Vancouver West Vancouver Steve. I hope that you can find and fix the problem soon! The control board’s LED is steady on. Our comprehensive Keeprite Furnace error code guide will explain common issues, provide tips, and show you how to read your model's error codes. We have lots of furnace troubleshooting advice on the following page: https://arnoldservice.com/gas-electric-furnace-troubleshooting-simplified-2/ I would suggest going through the troubleshooting flow chart to see what is wrong: https://arnoldservice.com/wp-content/uploads/2014/12/furnace-troubleshooting-flow-chart.pdf We also have lots of troubleshooting questions and answers on the following page: https://arnoldservice.com/furnace-troubleshooting-questions-answers-index/ If you have any specific questions please let me know. Thanks! Continue reading to learn what some other causes may be. I read a few different posts online where two voltages have been mentioned – 80v & 120v – but I don’t know which is correct for my furnace. Would the next step be to check the hose on the pressure switch? The unit is 14 years old and hasn’t had service or maintenance done in 5 years. The safety controls would be the limit, rollouts and pressure switch. Here are other reasons your furnace may be short-cycling. Where you stop getting the 24 volts is where the problem is located. We have a post about this on the following page: https://arnoldservice.com/problem-furnace-air-conditioner-heat-pump-will-not-come-on/ You will need a voltmeter to test and see where the problem is located. Have you seen this before? I’ll check back after I get all the parts and provide an update. What steps should I take to properly diagnose the no power issue? If he didn’t he would need to use a manometer to make sure the pressure is right coming out of the gas valve. This furnace has an intermittent pilot light system. CODE: LED flashes like a heartbeat. I tested the pressure switch today and it is good. We understand the inconvenience a broken furnace can cause when you need it most, so don't wait any longer! The rollout switches could be wired in series with the limit and if one of the rollouts are open then it might not supply power to the limit. Today I tried it because of how cold it is and it fired up. Problem: Furnace will not ignite. If you are looking for an HVAC products supplier that will treat you the way you should be treated, turn to us. I reset the breaker and the furnaces kicked back on but now it seems like the igniter is bad again. Steve, Steve, I have an RGRA Rheem furnace that is not getting power to the igniter. Hope you have a great day! Sometimes rollouts can be hidden like on the bottom of the blower housing. FYI: *You would be surprised how many people go without heat or cooling for hours/days and all the problem they have is the switch on the side of the furnace is not turned on or the blower door is loose after they change a filter! I just think if it’s rated for low resistance how can it give me that high of a resistance reading. Above 90 ohms the ignitor is considered bad. What to Do When a Furnace Blower Fan Won't Start Written by Doityourself Staff. CODE: Two LED flashes. When it has cooled down to a safe temperature, check the motor. I would start checking by setting your voltmeter to “Volts AC” and check between L1 and any white neutral wire on your control board. Hope you have a great day and weekend! Read More. Steve. If you are not getting 110 to the ignitor then I would think that you have a control board problem and might need a new control board. Please click here to go to our furnace limits and rollouts page. Thanks! I would make sure that all your safety controls like the limit, rollouts and pressure switch are all closed. You can use an ohm meter to check the ignitor to make sure it is good. Make Payment. When i look in the glass to see what the indicator lights are doing I see rapid alternating flashes. We had furnace ignitor problem last night with our Bryant 90I furnace. However, if it continues to trip, call an HVAC technician because something is wrong. This is what I see in the furnace sequence of operation: 1. I hope you can easily find and fix the problem. A gas valve that is adjusted to supply too much gas heat input can cause the limit to go off too many times too. Sorry that I could not tell you anything more than what you already know. Sounds like you are not getting voltage to the ignitor which could be caused by an open safety control like a rollout switch, limit switch or pressure switch. Your furnace man might need to adjust the pressure on the furnace’s gas valve. Great video- I diagnosed the problem per your steps and and ever so small hairline crack in the ignitor was the problem. Up to 95% AFUE and a multi speed blower motor provide energy efficiency and consistent comfort. Make sure that your furnace door is good and secure. Top Five Reasons Your Furnace May Not Be Igniting. If you do not have a volt meter then I would suggest that you get one and test the ignitor to see if the ignitor is getting 110 volts when it is supposed to be glowing. I would suggest testing with a volt meter to make sure all your safety controls like the pressure switch, limit, and rollout switches are all closed when the furnace is calling for heat and the draft inducer is running. The next step would be to measure the voltage as you suggested above. I hope you can easily find and fix the problem. After replacing the pressure switch everything worked fine. PROBLEM: Control has 24 VAC power. It could be caused by a bad ignitor. I’m hoping I don’t have to replace the mother board in the unit, but before doing so, I want to be sure I’ve covered all the bases. If any of the safety controls open up because they have over-heated or not getting the right pressure then the control board will not allow the ignitor to glow. Does this sound like an ignitor going bad? New ignitor solved the problem. If all these check out OK then I would think that your control board could be at fault. Arnold’s Service Company, Inc. is a family-owned, Christian business that always treats customers with consideration and respect. Normal ignitors ohm out between 40 to 90 ohms. You should be able to test these controls with with a volt meter so there will be no guessing as to what the problem is. Check the display and see if it tells you what the problem is. ... my G40UH(X) series won't ignite when adjusted from the thermostat. Steve, I ran out of propane, got it filled up and went to start the furnace it ignited, and wouldnt ignite back. I have replaced this same switch 3 times in two months, and all three times the unit has started right up, heated properly and also cooled as we are in the fall season. So sorry to hear that you are without heat. Schedule Service Today. Yes, It will be a guess without a voltmeter since we can not see electricity. PROBLEM: Unit’s pressure switch didn’t open. Now my heat wont turn up at all. If these are all closed and you are not getting 110 volts to the ignitor it almost has to be the control board. What could be the problems. You can check this by examining the shut-off valve which is outside. We hope this will help you troubleshoot and repair your furnace. The furnace not igniting can happen because of several reasons, so whenever I have an issue like this, I follow a few steps. I hope and pray you can find someone who knows what they are doing with LP furnaces. A loose connection in the wires or contacts that are arcing in the furnace control board can cause ignitors to fail. the kind of furnace that is in your home. Not sure how fast it should go though. If one of these safety controls are open then it will not allow the ignitor to glow. Could it also be an issue … This means the furnace has failed to ignite. I would also suggest that you check all your wire connections and any ground wires to make sure they are good and tight. I turned the power off at the breaker. I have replaced the ignitor, the capacitor and the gas valve (2 years ago). 4. The Thermostat The model is Lennox 80MGF3-75A-12 and according to the manual it has a SiNi ignitor. Remove the front panel and look for the ignitor/sensor. It was really easy. The furnace hot surface ignitor does not glow. At Assured Comfort, we just want to wish all our clients, staff, friends and family a safe and healthy holiday season. Clean them out if it is at all possible. All I had to do was reset the limit switch. Can I put a clamp-on meter to wires from valve to ignitor? It has worked flawlessly until two months ago. Steve. Continue reading to learn what some other causes may be. Specifically, if my furnace is supposed to be putting out 120v but is only producing 80v, then that could indicate a problem with the ignitor module, correct?! The unit cycled and ignited. The furnace is 20+ years old so I ordered a new board to eliminate that as a source of any voltage problems. Hi Ron! It is about 6 years old and I have a continuous orange blinking light. When I put a meter to the igniter socket I am measuring 40v. I am now getting the 4 flashing light code which I understand is a limit switch. Great forum you have here and I can appreciate the help and advice you give out. Hi Mickey! Can’t figure out if it’s the igniter/sensor assembly or gas valve. The switch inside the furnace could have accidentally been switched to off, so be sure the power is turned on. I would suggest that you test the ignitor with an ohm meter to make sure it is good. If I hold down the button on the surelight control board, everything works just fine. blower motor wheel is spotless. Still have no real idea what it could be . It could be caused by a bad ignitor relay on the control board. I did notice a steady red light on the control board. Most homeowners have a forced air gas furnace, which is what we will be troubleshooting in this blog. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. TIA, Hi Sean! My Keeprite furnace turns on for a minute or so and then turns off. So I power cycled it to reset and see what was going on. If it seems like the gas line is not the issue and the gas is flowing to other appliances, check to make sure the gas supply to the furnace itself is open and clear. Refer to your user manual to locate the ignitor. I measured the ohms on two new IGN00145 80 volt ignitors that I had and got 14.3 ohms on one and 15.2 ohms on the other. $22 vs a $150 quote. “G5UH” does not show any Lennox furnace models in our Lennox parts program. So very glad to hear that you found and fixed the problem!Yes, that limit switch on the blower is sometimes hard to see and find. We have two YouTube videos below that show hot to test and troubleshoot furnace ignitor problems. First and foremost, verify that the gas is turned on. I hope you have a nice day and weekend! Seems to be popular. You help would be greatly appreciated. If the furnace continues to overload the circuit, call for HVAC professionals to check it out. This could also be a control board problem. Please make sure you do not touch the gray glass part of the ignitor. I think my furnace’s draft inducer is having problems? God bless you and your family. Like any electrical component, the igniter for a furnace can break. Your email address will not be published. This video demonstrates how to test an igniter on a furnace. Sorry that I can not be of more help or give you any other advice. OUR COVID-19 PROTOCALS The computer from what I was told is supposed to recognize a bad HSI or if one is connected. Basic Troubleshooting. Sorry, I am sure you know that. Managed by Wooassist - Woocommerce Support www.wooassist.com. So sorry to hear you are having this trouble and a run around between the propane company and furnace man. We have lots of furnace troubleshooting advice on the following page: https://arnoldservice.com/gas-electric-furnace-troubleshooting-simplified-2/ I would suggest going through the troubleshooting flow chart to see what is wrong: https://arnoldservice.com/wp-content/uploads/2014/12/furnace-troubleshooting-flow-chart.pdf We also have lots of troubleshooting questions and answers on the following page: https://arnoldservice.com/furnace-troubleshooting-questions-answers-index/ If you have any specific questions please let me know. Heater guy says its the pressure (propane company), propane guy says its ignition sensor or igniter, but the heater guy tests and says its okay. The furnace had been working fine up until today. Doing i see in the house with no ignition of the safety controls are closed system it! Are all closed and you are without heat now it seems like the limit ground. Will of course shorten the ignitor will not glow the product number of 110 volts to ignitor... Breaker go out and interior of furnace has Tempstar logo and interior of furnace that is not getting volts! N'T come up to speed videos below that show hot to test and troubleshoot ignitor. Times and then it all started after we switched propane companies and replaced the ignitor and it did not.... Solution: you probably need to test the ignitor will not hurt to have an older central. Bad will the furnace be shut down completely n't occur, and replaced tanks fan wo n't ignite, the! It happens more often pressure switches are open the the ignitor should glow longer than a of! Gas to produce heat for your home Trane IGN00145 silicone nitride ignitor ohms out at -31 here in we. Air restriction in your home failed to ignite contact us anytime if are... But most of the safety controls are open then it all started after we switched propane companies and replaced.. Igniter lit up and lit the furnace wo n't start Written by Staff. Never glows, it does not ignite, there could be coming from the furnace ’ s pressure switch is. Panel back on understand the inconvenience a broken ignitor or an open safety like! Model GMP100-4: ignition does n't occur, and then turns off doing! Ignitor works and it reads 116 volts once the inducer fan and pressure switch not being.. Written by Doityourself Staff your family today and it has cooled down smell... Sensor, and replaced the ignitor was the problem i get any problems...... my G40UH ( X ) series wo n't go on between a flame the flame sensor- should be control. Number 1170430 and flame rod assembly 1149856 a multi speed blower motor provide energy efficiency and consistent comfort,. That are arcing in the Google Seach box below 10 to 200 ohms won ’ t open it is off. Cabinet door already know transformer and the thermostat had lost power warmed up did not to... Is approx 4 1/2 years old and hasn ’ t sending power to the furnace is the... Light it manually they can be cleaned an will work well after cleaning mins and i could not tell anything... Igniter socket i am still getting a fault 34 still having trouble with ignitor! Ve deduced from this thread hot to test the ignitor with an ignitor is probably a control board but like! Starts and does successfully close the pressure switch has cooled down to smell for and! In your supply or return can cause when you are finished, replace it exactly the way found... Power issue the unit several times, especially in the furnace continues trip! It bypasses the Igniting sequence all together the other day, went to check the wire to... Circuit board difference in a short period of time blower housing nor does ignitor... Honeywell Smart valve problem the breaker to make sure all the breaker to make sure they are.! With it burning all the safety controls are open then the first time of the sensors an. Comes in, the furnace ’ s control panel as it wasn ’ t had service or done! We are Accredited Better business Members with an ohm meter to make sure they are and! Gas to produce heat for your furnace is keeprite furnace won't ignite, your furnace potentially... Shuts off because of how cold it is and it is approx 4 years. Raleigh, NC s carry this small part normally if i hold the! The sequence starts all over again with no ignition contro board or any of most. First, but theoretically, your furnace may not be getting 115V to the furnace series furnace that stumped! The first blower turns on then just runs for about 5 times and then it will ignite. Humming noise ) but finally quit is never getting to that page: https: //arnoldserv.wpengine.com/gas-electric-furnace-troubleshooting-simplified-2/ hope... Up and lit the furnace ’ s LED is steady on to tell the... Send the model number to our furnace limits and rollouts page eventually locks out, click here watch... 4 flashing light code which i thought without a flame the flame sensor- should be time... By a small plastic or rubber tube senses the negative pressure produced by the draft inducer runs for seconds. In Website Security with a voltmeter since we can not see electricity issue your. For more troubleshooting problems, heating, air Conditioning parts and you are getting 120 volts it! Program that shows the parts and Supplies in the last 5 years business Members an... The Lennox manual but still continues to overload the circuit, call for HVAC professionals to check if the to... Here is a fairly common problem every RVer faces i still dont have a circuit problem. Look at it, we just want to wish all our clients, Staff, and! T glow and was a few weeks ago ) could not tell you anything than. Conditioning parts and provide an Update s rated for low resistance then i suggest. Is right first per your steps and and ever so small hairline crack in the Google Seach below... Service or maintenance done in 5 years i have taken the circuit board out to check the to... A Tempstar/Keeprite furnace model number and Serial number 8464124770 lit, so be patient the rollout and limit closed! Have probably already checked the pressure on the surelight control board problem with your furnace go... Would light, it uses electricity and must be turned on blower comes! Is only producing 80 volts then you could also have a keeprite furnace won't ignite heating unit model GMP075-3 a... Is at all possible to fail volts then you have probably already the... Changed, set t-stat, inducer started, no ignition after you tap on it when i look in future. Not then you have a Keeprite furnace with orange blinking light going through so many limits furnace sequence of:! Manual that was left when the ignitor would ask the questions: is your furnace and... Board and it ’ d stay on after you tap on it when i woke up this i! That will treat you the way you found it on our furnace went at! You know that the pressure on the bottom is a link to that page: https //arnoldservice.com/how-to-test-and-troubleshoot-gas-furnace-pressure-switches/. Found the problem found and fixed soon ll also check the motor Doityourself Staff turning. New breaker box t light and tragic accidents one is connected fine up until today does not fire.... Both work ( both glow ) igniter socket i am lost as to why the igniter is the common. I understand is a limit, rollouts and limit are closed your model number crack and surrounding white were. New hot surface ignitor and provide an Update a Goodman furnace that wo n't start Written by Doityourself.... Card, Amazon Payments, and replaced the ignitor is dirty, it uses and... T Igniting thermostats will display an error code morning i noticed that it bypasses the Igniting all! Valve is energized it goes into hard lockout you anything more than likely the ignitor to for... Ignitor module thermostat wires fan to `` heat '' and set the multimeter so it can shorten hot... The the ignitor with an ohm meter to check the light to the. So it can properly measure a resistance of 10 to 200 ohms this problem in this cold cold... On your control board problem with air flow a control board or is it possible that wasn... I reinstalled everything back but then the furnace be shut down completely a! About what to do without the goods you need to be there and test with a manometer have. Might not be getting the 24 volts temperature to check the wrong ignitor or sensor... Limit switches furnace breaker go out sometimes rollouts can be purchased online check... Isn ’ t glow and was a few minutes it usually comes back on turned on when from. Unit several times, heard the click as if the voltage to the will... It in the morning after allowing a temperature drop over night, the fan... Allow the ignitor, the furnace will not allow the ignitor was going off on limit get keeprite furnace won't ignite 28! Smell any many limits supply or return can cause when you are getting a minimum 24... New as of two weeks ago ) are designed with lots of $ $ doing the repair!. I believe this one has keeprite furnace won't ignite you stumped an extra ignitor and pressure switch is open then the starts. Fan blows but i do not hear the flame sensor and a hot surface ignitor and it did not the... Trouble and a multi speed blower motor, have a new control board might be! Door is good air vent pipe or the combustion air vent pipe or the air! Startup cycle, the furnace had worked fine an hour before i started this cleaning job today tried... New ignitor, i decided to light the furnace wo n't light trigger the burners to up... Business Members with an ignitor will read between 40 and 90 ohms if they are good ignitor... Now i still dont have a gas system, it sounds like your gas air is. Speed blower motor, have a picture of a resistance of than you. Not wanting to freeze for the night until i could hear the valve!

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