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My furnace burner turns off after just a couple minutes. The
my furnace burner turns off after just a couple minutes. The blower motor keeps running so it starts blowing cold air. … read more
Phil
Phil
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Degree, Mech Engr Technology
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We are dealing with a hydrotherm 175,000 BTU boiler about 4
We are dealing with a hydrotherm 175,000 BTU boiler about 4 years old. It has a history of occasionally having the pilot light go out with the last incident resulting in $75,000 water damage. To allev… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
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Have armstrong ultra sx 80 model guj075d10-3a. I replaced
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Rick
Rick
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My furnace will cut on with the exhaust blower then the pilot
My furnace will cut on with the exhaust blower then the pilot lights but the main burner won't always light, if I shut it down and restart it some times takes several tries but the main burner will ev… read more
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Hi, I have a Honeywell Tru-steam humidifier. It is wired
Hi, I have a Honeywell Tru-steam humidifier. It is wired to come on only when there is a heat signal. This required putting a pressure switch in the plenum. I am a retired HVAC engineer with 30 years … read more
Expert
Expert
I have an Armstrong furnace 90% when I turn on the thermostat
I have an Armstrong furnace 90% when I turn on the thermostat induser and main blower come on then the pilot lights then burners don't it won't work for a while then it will work fine for a couple hou… read more
hvacexpertjoe
hvacexpertjoe
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Vocational, Technical or Trade Scho
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i have a carrier furance model 28ACO42OOO that will not stay
i have a carrier furance model 28ACO42OOO that will not stay lit. I have replaced the ignitor, flame sensor in the hot box, bypassed my thermostat, and removed the filters. It will run to heat up the … read more
BillyHvac
BillyHvac
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The furnace is running, blowing cold air out. There is a
The furnace is running, blowing cold air out. There is a flame in the chamber but I am not sure if it is lighting all the way.… read more
BillyHvac
BillyHvac
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My gas furnace is not working properly. It shuts of prematurely.
My gas furnace lights ok, the fan kicks in, the burner stops after a few moments, and then the fan turns off shortly after that. The temperature of the house is still lower than the thermostat is set … read more
BillyHvac
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Have a Bryant Plus 90 furnace installed in1986. When heat
Have a Bryant Plus 90 furnace installed in1986. When heat demande, electronic ignitor lights pilot and after about 45 seconds main burner come on then quickly go out ( < 2 seconds) pulled air inlet… read more
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I have an Armstrong Ultra SX90 and it is just blowing cold
I have an Armstrong Ultra SX90 and it is just blowing cold air. The info plate on the inside says to turn the gas off for five minutes and then turn it back on. This ddoesn't get tthe pilot going (I b… read more
BillyHvac
BillyHvac
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I have an older amana furnace and the pilot light starts up
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I have a Tempstar natural gas furnace. Lately, the unit intermittently
I have a Tempstar natural gas furnace. Lately, the unit intermittently shuts off the main burners, however, the pilot (electronic) appears to be lit, but the blower/fan continues to blow until cold ai… read more
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Hi, my natural gas furnace cycles very frequently. Especially
Hi, my natural gas furnace cycles very frequently. Especially when its cold outside. It often cycles 2x per minute. This even occurs when its 65 in the apartment, and I set the digital thermostat to 8… read more
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Having issue with xr90. Same exact thing as below from another
Having issue with xr90. Same exact thing as below from another poster. Tech first said it was dust on the flame sensor, blew off then happened again. Called today and now it's a bad board from drippin… read more
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I have the Armstrong Ultra III 80 furnace, propane. When I
I have the Armstrong Ultra III 80 furnace, propane. When I came home this evening is was running. Later I notice not heat, just circulating air. I turned off the power. When I turn it on it runs the f… read more
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The furnace in my mobile home .the burner stays lit all the
The furnace in my mobile home .the burner stays lit all the time and the blower short cycles all the time and it never gets warm. what could it be?… read more
JBM HVAC
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I own a Tempstar Ultra High Efficiency furnace model NTGM 100
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Meet the Experts:

Phil

Phil

Mechanical Engineer

7,791 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,029 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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