Question about Intertherm 56000 Btu Gas Furnace

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Furance starts, runs short time, blower stops short time, then blower comes on, burner still runniing.

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Sounds like you fan limit control is not set properly. Or the blower speed is set to high.

Posted on Dec 19, 2014

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Posted on Jan 02, 2017

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Have a gmp125-4 furance blower runs all the time checked themostat wires error code 1 blink then 2 then 3 then 5 furance works if you turn power off turn back on when heat kickes off blower comes on gives...


Sounds like limit switch issue. Furnace heats up, high temp limit switch opens, fan will stay on. GMP model is older and do not have the codes.
May be over fired, have airflow problem, to cause the limit to open.
Next time before shutting off power, try to find the limit, it has two wires that connect to a 1.5 x 2 inch card mount to the furnace fire wall. tap on it and see if the blower stops. If so replace the limit.

Sep 06, 2011 | Goodman Heating & Cooling

1 Answer

Furance blower works, ignitor come on for a short time we hear a click ignitor goes out blower runs for a short time ignitor come again but gas not coming on. What is wrong.


The ignitor needs to get up to a predetermined temperature prior to opening up the gas valve, you could have a weak ignitor. You need to see if the PC board is sending 24 volts to gas valve. If it is but no gas, bad gas valve. If not, bad ignitor or bad PC board. I would change out the ignitor first since it is a wear item as well as the cheapest component.

Mar 14, 2011 | Heating & Cooling

1 Answer

HEATER TURNS ON AND RUNS THEN GOES OFF BECAUSE OF THE ROLL OUT LIMIT. tHE BURNER IS IS FLAMING OUT OFF THE BOX.


The furance needs to be clecned. Is the furance in the sdame roomas a clothes dryer. Lent can plug up the furances burrner tubes. With a shop vac switched to the blower side blow out the tubes and cleran the unit. Be careful not to touch the hot surface igitor while cleaning. These will crack easily.

Feb 13, 2011 | Goodman GMS90703BXA Heater

1 Answer

When call for heat on model # WGPH-10eamer serial number DF5D302f419801914 the furance goes throught the cycles, the burner comes on and cuts off after 8 seconds. The flame censor was changed and the...


It could be the control board, But before I would replace the board I would check to see if the flame sensor is not touching the burner and shorting it out. Also check the flue make sure it is open. This has a combustion blower on it and a proving pressure switch. Some time the pressure drops when the burners come on will trip the switch and start the process all over again and acts just like a flame sensor fault if the flue has some blockage. Also make sure you have a good ground back to the board. A little rust on the burner right at the flame sensor can block the micro signal back to the board. I am sorry I can't remmember the light codes. There should be sticker on the panel with the wiring diagram that show the codes. Good Luck I hope this helps....

Feb 06, 2011 | Weather King Heating & Cooling

1 Answer

I think this the model i have . The problem i have is the fan keeps running. Before once the furnace stopped shortly after the humidifier fan would stop . Now it just runs. I tried unpluging it to reset...


I think what your saying is the humidifier runs continuously. Check the wiring diagrams on the back page of the installation instructions.
You may have to install a sail switch to control the humidifier so that it only runs when the furnace blower runs (there are a couple of other ways to do this, but on older furances, this might be the easiest (it's the method I chose).

Nov 30, 2010 | Honeywell HE360A1027 Whole House...

1 Answer

Blower inop on auto or manual. burner inop.


Hi check out the fan control afc see if it is clean , check out pressure switch and the flame sencer

Feb 21, 2010 | Coleman Propane Forced Air Heater...

1 Answer

Knock Noise When Carrier Furance Starts Up


have the ac company check the actual blower wheel itself it may be slowly coming apart

Apr 20, 2009 | Carrier Heating & Cooling

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