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Propane furnace "POOFS" several times when starting heat cycle
I'm not sure how you are going to solve this, as propane's relative gas density is 1.55 times that of air, causing the gas to "pool" up in the bottom of the ignition chamber... After you are hearing the "poofs", the chamber is probably warmed up and the convection of the column of air rising then prevents the pooling of the gas towards the bottom. Hence the poofing goes away. Is there a pre-warmer or something that you are missing?...
Sounds as the regulator is not operating correctly (possibly the control board)
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Propane furnace "POOFS" several times when starting heat cycle
I'm not sure how you are going to solve this, as propane's relative gas density is 1.55 times that of air, causing the gas to "pool" up in the bottom of the ignition chamber... After you are hearing the "poofs", the chamber is probably warmed up and ... Dometic Rooftop RV Air Conditioner
Furnace starting Lennox furnace model G6OUHV(X) series. Furnace would not start heating cycle unless I ran thermostrat temmp. setting up and down. Most times it would than start heat cycle. If not I would shut main power switch on furnace, wait a few seconds and then the furnace would start the heating cycle. I suspected the thermostat so beofre purchasing a new one I installed the old from my privious Lexxon. It now seems worse than ever. I either move the set points up and down (sometimes it w
Hint number 1, get HVAC license. One mistake or misunderstanding and you could blow your house up. ... Air Conditioners
I turn the thermostat down at night. When I get up in the morning I turn it back up. The heat kicks on for a minute or two then the unit starts blowing colder air. If I turn the thermostat to the OFF position, wait until I hear all blowers stop, then turn it back to the ON position, it will start blowing HOT air again. Some times I have to perform this cycle 3 times to get it to keep blowing hot air. Any ideas as to what is shutting the furnace off? Thanks, Wayne
Theremostat switch problem. Replace it. ... Air Conditioners
Weather King II Acclaim furnace cycles on and off and the house temperature never gets above 67. I've cleaned and sanded soot off of the temperature sensor. I've cleaned all the sensors and vacuumed out the burners and changed the air filter. The burners cut out after about 10 minutes and then the furnace shuts off and then restarts. This occurs for about 4 or 5 times and then it shuts down for about 20 minutes before it starts again. The house never heats up.
Wow, about the only thing you have not looked at is the thermostat. Have you had the gas pressure tested? Next time it quits, Ohm out the gas valve to see if it has a bad coil. I have in the past put on the gas valve one of thoes light probes and had ... Weather King Air Conditioners
I have a Tappon furnace DGUF 106 02 EF Serial 77D18453 The unit has an intermittent problem, It will cycle at will, thermostat is good I can sometimes get it to come on by heating the unit above the control valve(the one with the spark plug wire looking wire from the bottom) OR cycling the main valve removing the Yellow wire several times. this is not working well now . any Ideas?? Thanks Ted
... Air Conditioners
Intertherm M2Rl080A16bn but it is propane. Ok, I've only used the furnace a few times a year for last 5-6 years. Iturned it on yesterday,seemed to work fine for the first cycle then it didnt start up again. I checked filter it was dirty so I changedit, still wouldn't work. Checked manual and it suggested the reset button on the vent safety switch but it wont push in or do anything. The LED light is blinking twice repetively which suggests pressure switch is not closing. Can I do anything or do
... Intertherm Air Conditioners
Ruud Silhouette II furnace: comes on and runs for as long as it wants, then turns off. Sometimes turns off at pre-set temp, other times just when it wants. May turn on again, behave well for several cycles, or for 20 minutes. When I get too cold, I go out, downstairs, and thump it near the fan. Starts right up, runs for as long as it chooses. Nearly least energy-efficient kind, v. frustrating. Had trouble-shooter out a few years ago, couldn't find anything. An intermittent short?
Hi ruby. Begin by installing a new thermostat. Preferably one that allows you to program weekday and weekend temps. separately. Joe ... Ruud UBHC Air Conditioner
I have a Kewanee model#1736 hot water boiler furnance which is gas fired.I had to change the heat pump and the heat pump switch.The heat system is wired through a Webster Heating Contol unit which has three settings,Run,Auto,and Off.Normally when the heat control unit is in the Auto position the furnace and heat pump will start and run automatically until it reaches the desired thermostat temp. Then both the pump and the furnace would shut down at the same time until the thermostat falls below t
The thermostat turns the Boiler and the Heat Pump on simultaneously???....That doesn't sound right...normally the Thermostat brings on the heat pump first and if the temp continues to fall (Its Cold out) then the Boiler would kick in about 2 degrees ... Air Conditioners
I have Amtrol water heater. Recently I noticed that boiler trying to start several times till it finally starts. I decided to check if it is a boiler or water heater problem and turned on house heating system that was OFF for summer time. Boiler started immediately without any trying atemptes. Looks like it is a water heater problem. My qustion is: what should I change most likely - temp. sensor or temp.control? Thank you. Vlad
That's a good question. What a shop would do, is try one, then, if that didn't work, try the other, in this case- if they had the parts. It's hard to test the sensor correctly, and the temp. control might be intermittent, which means it would sh ... Air Conditioners
I have a Carrier Gas Furnace Model # 395CAV024055ABJA, I works fine if you keep the temp low, like 68, so that it doesnt come on very often, but if you try turning it up and it needs to run for awhile, it wil start this cycle where the flame will kick on and off, the blower is continously running and only blowing cold air, I have tried new batteries in the thermostat on the wall, and have tried putting it on manual heat, no change, another thing is that once it starts this cycle, if you shut it
It sounds like it is going into overheat mode. Check the overheat sensor, make sure the flue is clean, make sure any filters are clean, also check the gas passage inthe heat exchanger, if there is a blockage from soot the system will overheat ... Carrier Air Conditioners
Hello, I have a Amana Air Command 80 model #GHI90A50, 22 years old. This furnace is on its third ingnition module (last one two yeras ago). The symptom I am trying to diagnose has been ongioing since this latest ignition module was installed. The furnace is short cycling, meaning it runs often once every 8minutes but for less than 3 minutes at a time. The sequence is as follows: Cycle start (small blower turns on), followed by the ignition module illuminating (yellow) for 3 seconds then turns g
If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts \012right back off, then you need to clean your flame sensor with light sand paper \012or steel wool. You might need a new flame sensor, but most of the time th ... Air Conditioners
Intertherm model MMHA 077AAHR 01 On occassion starts, stops several times before staying in run mode to complete a cycle. If it needs a switch replaced I need to know which switch and where.
... Air Conditioners
We had a new Carrier Weathermaker Infinity Gas Furnace installed in our home on 9-21-99.The Carrier people said the furnace was in good condition this past October.But prior to that as of April 2010 the furnace started sending up really cool air. Was told by the Carrier serviceman that the Controlboard was running on high and low at the same time also found the Board fired.Then NO HEAT. Got a new Controlboard installed,that didn't work Still NO HEAT.Was told furnace needs a model Plug that was
... Air Conditioners
The fan inside the furnace cycles on and off several times before finally turning on completely.
... Ruud Rheem Control Circuit Board 62-25338-01 1097-200-i
Sometimes my Silhouette doesn't start and then I flip the emergency on off switch. It starts up, igniter lights, gas blows, lights up and then clicks off and cold air blows. After the 3rd time the cycle completes itself and we get heat. We replaced the safety temp switch and it worked great for about 3 months. and it's starting to happen again.
... Ruud Air Conditioners
I have a goodman heat pump system and the fan turns on and off several times at the beginning of the cycle, but not every time. And sometimes it bangs really loudly but not other times when it is doing this. I had the fan replaced and that is not it? The a/c guy said he does not know what it is? Any ideas?
Sounds like it could be an issues with your defrost control board this device allows the fan to shut off during the defrost cycle of operation in cooling the relay is in the closed position allowing power to the fan this relay on the board coul ... Goodman CLQ36AR49 Air Conditioner
I have a problem with my Johnstone furnace "Mod.# MBA 040 nh2r" every time the furnace calls for heat the gas valve release the gas a few seconds before the igniter witch causes a small explosion. This happens after the firt initial start and continues every few seconds.Also I can't seem to find this brand of furnace.
Hi, this is called delayed ignition which raw gas is let into the combustion chamber and ignited a little to late. which causes this explosion. I have had my eye brows and eye lashes burned completely off do to this. Johnstone is a very popular brand ... Air Conditioners
Intertherm Model MMHA 077AAHR 01 Gas furnace starts and stops several times before remaining in a staedy run mode.
... Air Conditioners
First time lighting propane M1M Intertherm. Furnace cycles, but will not light the pilot. After 4 tries, it locks out and the red light blinks 4 times. Am I doing something wrong? I changed the orifice and checked it twice.
Once it is lit in the pilot position. Keep holding in this position with button down for exactly 1 minute, then WITHOUT releasing knob, turn to on position. If problem remains, you may have faulty valve spring. Check to see if valve stays up. ... Air Conditioners
I have a Goodman Furnace model#GDS80703AXBC.The unit is one year old and ran fine until the gas got shut off accidently outside at the meter.Unit was cycling with no gas for 2 days.we turned the gas back on and the unit is showing one light blinking for over cycle trys.The unit did eventually start up but it does not fire up after each time the thermostat is calling for heat.The unit has been running like this for about 10 days now.I have replaced the Diagnostic computer, glow igniter,flame sens
The only part not replaced so far is the gas valve. Because the gas valve is getting power does not mean it is opening.You could also have gotten trash(corrosion/scale) in the valve orifice and or the burner orifices.Is there a drip ... Goodman Air Conditioners
No heat, no flame, the furnace is going through its cycle, but the blower wont come on or flame.... the red led light on the cicuit board is flashing 4 times... the code for this says its an ignition fault..and to check the ground connection....followed the connection back to the armoured cable where the power is coming in and reconnected and checked all ground connections they are fine....the furnace is a g6rc frigidaire...what can i do..???
Is the pilot light on if not try relighting it. ... Frigidaire Air Conditioners
Our Rinnai C85 tankless water heater is used for radiant heating. During the heating season it will occasionally throw a "12" code and cut out. It will reset and run for several days. Technician has been out 4 times and seemed to have it fixed but this year it started again.
Sorry to read about your problem, I hope this helps you out.Ok your code 12 is a gas issue, or this listed belowCheck that the gas is turned on at the water heater and gas meter. Check for obstructions in the flue outlet. ... Air Conditioners
Heat does not come on. Furnace light blinks 3 times, indicating faulty pressure switch. I jumped the pressure switch, which caused the ignition filament to light up. However, it quickly shut off again. No gas comes out so the blower never starts up. Have checked the lines, they appear to be clear. Furnace is only about 6 years old. Any idea what is causing this and how to fix it?
Hi,When jumpering the pressure switch ...you need to let the blower start and then apply the jumper... the brain needs to see the proper sequence or it will not allow the gas valve to open...and when it shuts down the jumper must come off ... Air Conditioners
I have a goodman furnace. The blower is not kicking on for my heat. however if I switch it over to a/c then it blows fine. My furnace works with the blower starting first then the ignitor will engage lighting the propane. what could the problem be?
... Goodman CKL24AR24 Air Conditioner
Carrier 58rav gas furnace won't stay lit. Vent assist fan comes on ,burners ignite but just before the main blower comes on the flames go out. then the fan runs for 30 secs then the process starts over again. Usually the 3rd time it stays lit and actually heats the house. I have changed the flame sensor and if i unplug the power for 10 min. it usually works OK for a few days and then starts doing it again.
Hello my name is Heath it will be my pleasure to assist you. If you replaced the flame sensor I would check the vent pressure switch check the hoses and the niplles that the hoses are connected to to be sure they are clear of aany dirt or rust. If yo ... Air Conditioners