Having problems with your Air Conditioners ?
Furnace burners wait too long to come on
Sounds like the burners need to be removed from the furnace and cleaned thoroughlyto help with gas distribution if these are in-shot burners they look sort of like an air plane, they have a cross over tube on each side of each burner and if that is rusted up the gas will not distribute evenly from one burner to the next if the pilot and burners go off at the same time then it sounds like you may have some flame blow back maybe due to soot build up in the heat exchanger. Overall sounds like your furnace could use a good servicing
Repair Help & Product Troubleshooting for Air Conditioners
You need a second opinion or clarification ? ask it in the comment box OR you can Ask Your Own Question
Tips for a great answer:
- Please provide as much detail as possible as this will allow our members to better understand and respond to your Comment
- If you need clarification, ask it in the comment box
- It's 100% free, no registration required
Suggested Questions/Answers :
It is recommended you read all this kind of situations
Furnace burners wait too long to come on
Sounds like the burners need to be removed from the furnace and cleaned thoroughlyto help with gas distribution if these are in-shot burners they look sort of like an air plane, they have a cross over tube on each side of each burner and if that is r ... Air Conditioners
I have an old 1973 Mac 1199 Intertherm propane furnace The burner will come on and it takes a long time for the blower to come on Sometimes the blower wont come on at all and after awile the burner will go off After awile the burner will come back on some times the furnace will work fine other times it will repeat the problem any ideas
Replace the fan limit switch. It is sometimes mounted in the ductwork and sometimes just below the ductwork in the furnace cabinet. Note where the little arrows are pointing to on the temperature scale so you can set the new control to the same as th ... Intertherm Air Conditioners
Carrier 8000 this is a 2 stage furnace. furnace lights but the blower fan comes on before it is hot and continues to run long after the burner goes off.
Send model no. n manual ... Carrier XHB123D X/Y Series Heat/Cool Air Conditioner
Intertherm furnace burner comes on, but blower does not. If I turn thermostat off then back on until it clicks the fan will then come on. It does not do this all of the time, just now and then.
... Intertherm E3EB010H Electric Furnac
I have an 8 year od York furnace model P1XUC20N09501C 90%. The problem is the ignitor comes on, the left burner lights, but the other burners won't light. I can light the other burners manually with a lighter and the furnace works fine. My furnace repair guy was at my house and told me to remove all the burners and clean the ends of them. I took the first one out next to the one that lights and cleaned it. (What a challenge and time consuming) It still won't light. Obviously after the rema
... Air Conditioners
I have a sv9500m 2674 tha has a sticker that says it has been converted to L P gas. The ignitor lights the pilot and the fan comes on. The pilot stays lit and the main furnace fan comes on but the burner never fires. I have checked the electrical connections, cleaned the flame sensor that is on the ignitor (Q3400A1024) and cleaned the orafaces on the burner. I am thinking that the valve may be bad because the main furnace fan does activate which I assume is also controlled by the flame senso
Hello,If you cleaned the flame sensor and it is in the pilot flame,Try adding a ground wire from the pilot assembly to any close screw to boost the (pilot on) signal.Also if the valve has been sitting for a while give a tap once during (pilot on) to ... Honeywell Air Conditioners
Heating I have a 7600a presidential 11 coleman furnace it heats fine but the fan goes on and off . The furnace will come on and burn but the fan will come on and then go off and wait a few minutes and come back on again.
If this is an older furnace, it is probably a wearing fan control.\015\012Some can be adjusted, otherwise they need to be replaced. ... Air Conditioners
My goodman furnace (model gmp 108-3) is not working. If I turn off the unit and turn it back on the fan comes on and the little filament heats up, then the top burner will light, but it will not stay lit and none of the other burners will light. After a few tries, it turns off and doesn't come back on.
All of the burners should light. Could be a dirty flame runner. I recommend that you get a good clean and check.. Burners, flame runner, flame sensor should all be cleaned. If this does not solve your problem than the gas pressure nee ... Air Conditioners
We have a Carrier forced air furnace and it constantly recycles itself by igniting and then it heat sensor element and the furnace flame burner comes on as it should burns a short period goes out and then empties the heated air from the chamber, and then repeats the same system over and over. However; the heating element stays red hot and the LCD light constanly flashes a code. We have had atleast three different techs to come out and they only replace the heating element, and the last tech sand
Hi,\015\012\015\012First off the problem has nothing to do with the filters...\015\012\015\012The problem is that the circuit board is not getting told that the flame is present and is shutting the gas back off.....then it tri ... Air Conditioners
I have an oil forced air furnace. The blower fan works sometimes and sometimes not. The furnace turns on and the burner works, but at times the fan does not come on and the burner shuts off. What is causing this and how do I fix it?
With out brand and model # don't no for sure, but i would check fan relay, and connections for loose\015\012wires and also the fan or capacitor could be going out. ... Air Conditioners
Furnace will not light burners and blower motor doesn't come on, but exhaust fan comes on immediately when turning furnace on. Turned on A/C to make sure blower operates and it does. The combustion chamber door says there is a red button to reset inside, but the only thing I can find is like a thermistor with maybe a button on it and it is not kicked. What should I try next?
The reset button should be a small round red button that you just push in to reset. If the induced draft motor comes on as soon as thermostat calls for heat then the next thing to check is the ignitor. It may be a hot surface or spark ignitor.It shou ... Air Conditioners
Gas heat does not always come on when it is switched on, when it does it works fine when it does not, the house is filled with a bad smell, I'm assuming unused gas. we have had the burners scrubbed with a wire brush before and no problems for 2 years. Can the burners just be replaced? Pilot light works fine. The furnace tries to come on, i can hear it clicking to ignite. Thanks Ronnie from Atlanta
You need to check gas vent ASAP. You should not be getting any odors from your furnace. Have a technician check your furnace. Could have hole in Heat exchanger. If so you and anyone else there are in danger. Please do not operate till it has been che ... Air Conditioners
The Coleman Mach thermostat in my 5th wheel blows its 2 A fuse a couple of times today and am trying to figure out what is causing this. Please help. I am unable to get the furnace to run even with a good fuse in the thermoatat. When I bypass the thermostat to run the Atwood furnace (red tied to white wire). THe furnace blower comes on and the burner sounds it lights for 5 seconds and then goes out. 15-20 seconds later it reignites and goes out and continues to cycle -- the blower motor
Hi\015\012\015\012Its blowing fuses because of short circuit inside the coleman mach or due to two wires being shorted with each other. You'll need to open up your thermostat system to look for the short circuit and also shorted wires.Ple ... Air Conditioners
On a standing pilot furnace, when the burner fires it burns improperly. Seems like to high gas pressure, and blows out burner, and pilot. Tried to remove burner oriface, but does'nt seem to come loose. Oriface looks clean. Should i remove the oriface with a small pipe wrench(might do damage)or does this sound like a cacoon or something in oriface?
That really is one you should have a pro look at.Impropper combustion can lead to carbonmonoxide. ... Coleman Air Conditioners
27 year old Lennox gas furnace no heat was coming out of the vents, so I went to the basement and saw 1. One burner was clogged all along the surface and instead of the flames going up the flue, they were going to the outside of the flue where the wires are. 2. I was told by an HVAC that the flue is stopped up with soot and to just go ahead and get a new furnace. Should we get a new furnace or get this cleaned out? Thanks
Please get a furnace that thing is seriously a death waiting to happeng.that is a scary thing to happen. I personally have seen the end results. In the mean time space heaters are safer. ... Carrier XHB123D X/Y Series Heat/Cool Air Conditioner
My rheem centrion furnace hot surface ignitor heats up and the main burner lights for afew seconds and then goes out.it cycles like that twice without the other two burners lighting, and then the blower motor comes on, it seems like the normal sequence exept for all the burners igniting.
I am not sure from your description about the main burner. There is one set of burners in a heater. There are usually tubes that in line that have jets in them. The ignitor should have a flame detector. IF this detector gets dirty or corroded then wh ... Air Conditioners
I have a U-42 Janitrol gas furnace that will not start the exaust fan nor will it light the burner but the blower fan will come on. I have two identical units. I've swaped the exaust fans and the unit that was working strarted the other exaust fan - put the known working fan in the non-working unit and it still didn't come on. I switched the thermostats and still no positive results. Any suggestions?
... Air Conditioners
Furnace doesn't heat the burners come on for about 3 seconds then shut off. The furnace is a Trane XL80
Hi,\012\012The flame sensor is not sensing that the flame has come on....the flame sensor could be dirty or the could be ignition module problems...\012\012I am assuming that this is not a new installation....because reveres p ... Air Conditioners
I have a Frigidaire furnace model 80 the burner comes on when thermostate calls for heatè, the fan cuts in and when the burner shuts down the fan wont shut down. Just keeps running. Is the electronic board the problem. Jim
Hi!\015\012\015\012It could be the PCB board or the thermostat unit. Check the thermostat first, there should not be continuity between the the R, and the G, Y or W terminals when the thermostat sends the shut down signal. If continuity pres ... Air Conditioners
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
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'm renting an apartment with what appears to be an old...very old furnace. I've gone to the leasing office and nobody has come to look at it yet and it's been nearly 3 days without heat in my place. So here's the problem. I lit the burner as it must have been out the whole summer. I figured lighting the burner would give me heat but no luck. When looking at the furnance there's a chain pulley on the left with a low/high speed. When I pull the chain the motor/fan turns on but blows cold/cool air
I got a solution.don't mess with it.\015\012just harrass the landlord till you get service.it's against the law not to provide you with heat.be patient though....we are coming off the holidays.any people are just returning to work.that includes ... Weather King 12AJA6001AH Air Conditioner
We have a Goodman Furnace and Air Conditioner approx 7 years old. When I put the Cool on thermostat and lowered the temperature for the air conditioner to come on the furnace fan started but the outside air conditioner only made a humminging sound. How long does it take for the air conditioner to start? I thought in previous years it came on quickly. I changed batteries in thermostat and reset the brakers on the main electrical panel. Could you please give me some advice. Thank you.
Hi, You are right. The outside unit starts quickly. The humming will either be the evaporator fan or the AC compressor itself. If you can reach into the evaporater fan with something narrow and stiff you may be able to see if the fan turns. Sor ... Air Conditioners
Furnace come on then fan stops while burner still is on, then fan comes on for 1 min. and goes off over and over
This could be a couple of things, first is the fan limit switch. Make sure your fan limit is set at the correct settings, there is a fan on setting and a flame shut off setting located on the front of air handler inside the front cover. Usaully set a ... Coleman Air Conditioners
For ruud achiever 10 ac unit uaka-030jaz. Unit was working fine saturday...sunday we noticed air was not cold anymore. I have checked all my breakers, put a new battery in the thermostat, cleaned the filter on the furnace unit, and opened the exterior unit to see it the relay was burned( appears ok as long i understand which part is the relay.). When we turn on the ac the furnace unit in the attic will come on and blow air..however it never gets cold and nothing in the outside unit appears to co
Hi, the problem is in the outdoor unit if the indoor unit comes on and is blowing air. At the unit, you will have a disconnect box, 220 volts. Inside there will be 2- fuses. If you can't see them its because they are behind the plastic cover. You may ... Air Conditioners