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My furance dose not fire up to get heating - Air Conditioners

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If you were able to light the pilot light but then it went off immediately before the burner starts firing, highly likely the thermocouple in your furnace is broken. If you are not a handyman, it is not simple to replace this as well, you can cause gas leakage if you have never worked with gas. Suggest to contact a licensed gas repairman even though the thermocouple part is not expensive.

Posted on Oct 19, 2008

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I recently replaced my furance in my moblie home an now o have a Intertherm gas furance and i would like to have owners manual with it it did not come with one thank yoiu


Hi, most of the time, they tuck the manual in the heating section of the unit. Look around and you may find it. If you have then go with what Mike said to do.
Robert Horton

Nov 06, 2011 | Intertherm P3RA-048K Air Conditioner

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AC IS TURNING ON BY IT SELF AFTER I SWITICH IT OFF, HOW TO SOLVE THIS PROBLEM


Sounds like a problem with the furances circuit board. With the furance powered off, disconnect the two wires at the circuit boards thermostat terminal strip. These are probably red and white wires connected to the "Y" and "C" thermostat terminal strip on the circuit board. These two wires send 24 volts to the outside A.C. condenser unit when the thermstat is se tinto the cooling mode. With the thermostst in the "off: postion measure across the "Y" & "C" terminals at the furances thermostat terminal strip. If you have voltaged than either the board or thermostst has failed. The next step to determine which has failed is this. Disconnect all the thermostat wires at the furance. To check the heating circuit jumper across the "R" & "W" terminals, the furance should fire off for the heating circuit and run non stop beacause the thermostat is no longer controlling it and is isolated from the furance. Now remove the jumper and jumper across the "R" &"Y" terminals, the blower should run at your furance for the cooling mode and you should have 24 volts across the "Y" & "C" terminals for the outside A.C. condenser compresor contactor.Next check for blower operation by jumpering across the "R" & "G" terminals. If everything checks outs than the thermostst is the problem. Tou may also want to check the control wiring at the thermostts , furance & out side condenser unit. If the wiring has connnected somewhwre between these points or at the terminal connection this may also be bring on the A.C. when the thermostat is in the "off position.

Feb 13, 2011 | Hitachi Air Conditioners

1 Answer

Fire burns good for a while then wants to go out


Flame sensor at furance burrner conpartment needs to be cleaned. Flame sensor is located at the left of the burnner compartment fsarthest burner tube from ignitor. Remove and clean with very fine grit sand paper 400 grit works best.

Jan 26, 2011 | Air Conditioners

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My honeywell focus pro 5-1-1 wont shut off..its showing off on programmable thermostat but its still blowing cold air and i have it set to 90degrees...my problem indicator light on my unit is blinking 4...


Turn the power off at your furnace. Take the top front cover off at the furance. The high limit switch is right in the middle of the unit above the burrner tubes. Two low voltage (24 volts) wires are going into it. It is about 2.5-inches high and about an 1.5-inches wide. Remove the two wires and witn a hair pin hook them togeher at the connectors. Try your furance and see if it runs normally. If it does remove the jumper and replace the high limit switch. *IMPORTANT! never leave the jumper and remove imeditelly after truoble shooting. This is a safty device and keeps the furnace from catching on fire.ALSO IMPORTANT! do not let the jumper lay on or touch metal when trouble shooting. This will short out the 24 volt transformer.

Jan 26, 2011 | Air Conditioners

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I Have a beige goodman furnace (old ones) gmp... i replaced the circuit board..it worked fine..then once it reached its desire temprature from thermostat.. fire goes out then 2 min following is the...


Check the pleum high limit switch. Jump this control out and see if the furance runs until the call for heat is satified. Do mot leave the high limit jumperd.

Jan 26, 2011 | Goodman CACF048B2A Air Conditioner

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Unless we set the thermostat very high, like 80 degrees, the heater will blow cold air. When the heat does blow, it will eventually stop blowing heat and the fan will continue to blow cold air.


Check and make sure the filter is clean. This sounds like a restriction in the system. If the unit has central cooling make sure ther indoor evaporator coil is clean at the furance.The unit may be cycling the burners on and off at the high heat limit , fan/limit control. You can also eliminate the thermostst from the furance. Turn power off at the furnace and disconnect the wiring from the thermostat. Jumper the red and white wire together. Turn the furnace back on. The furance should run in the heating mode. Try this and see if the problem is still there.

Jan 25, 2011 | Air Conditioners

1 Answer

Furnance not starting


Try cleaning the flame sensor. Its the most common problem on todays furances. You should clean it with a fine grit sandpaper or emery cloth once a year.

Apr 11, 2009 | Air Conditioners

1 Answer

Furance Nordyne E!EB-015HA


If the transformer is you must have a low voltage short.
does your transformer have a trip switch that you can reset?
You could try to use a hair drier and dry out any water residu in the compartment. but my guess is you have a low voltage short.

May 18, 2008 | Air Conditioners

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