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I have a 340MAV furnace which has been running well for 15
I have a Bryant 340MAV furnace which has been running well for 15 years. Yesterday, I noticed that instead of heating, it was blowing cold air. After learning more about the code and how to reset the … read more
Rick
Rick
Supervisor
24,980 satisfied customers
See your discussion below on your websit - I have the exact
See your discussion below on your websit - I have the exact same problem - The igniter lights the burners - they go for about 8 seconds then on again over and over - then the Limiter opens - turns off… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
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I have the following question: I have a 10 years old Carrier
Hi, I have the following question: I have a 10 years old Carrier gas furnace. Thermostat is new (I just replaced it because I thought it would fix my issue but it didn't).The problem: when the heather… read more
airheatman
airheatman
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Furnace will not turn on, The filter is clean and in place,
Green LED light is on solid and red light is on solid… read more
Phil
Phil
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Degree, Mech Engr Technology
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Have a 395CAV048111AGJA 80% furnace that runs then shuts
Have a Bryant 395CAV048111AGJA 80% furnace that runs for 24hrs then shuts off. also noticed that when furnace fires off draft inducer stays running is that normal operation?heater, coil,and 30"plentum… read more
Phil
Phil
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New furnace , when power turned on blower motor starts imm
New furnace , when power turned on blower motor starts immediately It is a williamson low boy model club 140 dd r st. Furnace burner started at first then shut down but blower stayed on now it runs as… read more
Brian HVAC Guy
Brian HVAC Guy
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High School
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I have a Bryant 310AAV furnace installed and tested in January
I have a Bryant 310AAV furnace installed and tested in January 2003. We moved in last year. The furnace quit working two evenings ago. I called a tech who said it was an "intermittent outage." He thou… read more
Heath.M
Heath.M
Refrigeration Mechanic
Vocational, Technical or Trade School
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I have a problem with a 1970s coleman presidential II 7680
I have a problem with a 1970s coleman presidential II 7680 mobile home furnace. The tech wrote the paper work up as follows: Blower short cycling-runs for 1 minute with burner moving warm air then shu… read more
V12Tech
V12Tech
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I have a rheem mdlrgdd12nejr gas furnace. Everything cycles
I have a rheem mdlrgdd12nejr gas furnace. Everything cycles just fine except the fan motor won,t go off after the burners have shut dow. Even when all three thermostats are turned off. It runs far pas… read more
BillyHvac
BillyHvac
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I have a Honeywell T8112D thermostat (two actually) and the
I have a Honeywell T8112D thermostat (two actually) and the fan goes on randomly even when the heat/cool switch is set to Off, and the Fan is set to Auto. I would like to be able to turn the fan off c… read more
V12Tech
V12Tech
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I have an Armstrong gas furnace, model no. 911-G6-120, that
I have an Armstrong gas furnace, model no. 911-G6-120, that is at least 45 years old. I have lived in my house for 13 years and haven't had any problems with the furnace. When the furnace is not call … read more
airheatman
airheatman
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Hi there! I have a Payne furnace, Model# pg9mab060120 built
Hi there! I have a Payne furnace, Model# XXXXX built in 2007. It is set up with a Bryant heat pump system. The code (33) states a flame roll out or limit switch problem. I assumed that the cold air re… read more
Matthew
Matthew
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Hi, My carrier forced air furnace is ~20 years old. When the
Hi, My carrier forced air furnace is ~20 years old. When the system started for the winter season, the blower now cycles on and off twice for about 20 seconds after a normal heating period, until fina… read more
Douglas
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Vocational, Technical or Trade Scho
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I have a Trane XC90 that keeps setting intermittently the Open
I have a Trane XC90 that keeps setting intermittently the "Open High Limit Device" error code (4 Flashes). This furnace is about 10 years old. I have changed the filter and cleaned the evaporator to r… read more
gotoman for ac
gotoman for ac
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I have a ziegler furnace in a mobile home that works just fine
I have a ziegler furnace in a mobile home that works just fine if I do not put the thermostat above 66. At 67 the blower cuts on and off. The thermostat has been changed. The limit switch has been cha… read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
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I have a Payne downdraft Furnace installed in a rental house.
I have a Payne downdraft Furnace installed in a rental house. The tenents are telling me the furnace was not working last year but did not turn it on this year prior to turning it on. Model # XXXXX Se… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
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I have a natural gas furnace from late 1960s to early 70s
I have a natural gas furnace from late 1960's to early 70's not sure if it's original to the house my pilot light was out this morning couldn't get it lit so I called the utility company to lit it he … read more
Rick
Rick
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24,980 satisfied customers
Heater turns runs till desire heat 70 then shuts off. Doesnt
Heater turns runs till desire heat 70 then shuts off. Doesnt turn back on when falls below 70. I go to heater turn the blower on the heater to Summer let it run 5 minutes. Now the temperature in 65 in… read more
Rick or Nick in Texas
Rick or Nick in Texas
General Manager-Lead Tech
Own and run HVAC business 29yrs
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Meet the Experts:

Phil

Phil

Mechanical Engineer

7,634 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

1,024 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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