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GMC FURNACE MODEL GMPN060-3

HELLO MY NAME IS STEVE: MY PARENTS HAS THE ABOVE FURNACE AND IT WILL NOT RUN CONTINUOUSLY TO HEAT THEIR HOUSE ABOVE 70 DEGREES. IT ALWAYS SHUTS OFF PREMATURELY AND THEN STARTS BACK UP 5 -10 MINUTES LATER. EVEN IF THE THERMOSTAT IS JUMPERED OUT IT WON'T STAY RUNNING ...

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I've got the same furnace. I had to replace the auxilary pump that moves the water to the floor drain. The pump plugs into an outlet on the furnace and even has a light switch to turn the power source on and off.
If your folks have the same set up, make sure the switch is in the ON position.

Posted on Jan 24, 2008

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Sounds like s safety or overheat switch is tripping. Clean or replace air filter, inspect the venting for restrictions and make sure all registers are open all the way and not blocked by furnatue. Also check the condensate to make sure it is draining. If it continues to not heat, call a technician.

Posted on Jan 23, 2008

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1 Answer

My furnace runs to operating temp on thermostat shuts down then within 30 seconds try's to cycle back on three to four times. What would cause this.


Some thermostats have a swing setting that can be adjusted. A swing is the setting when you want the furnace to stop or start from the desired set point. For example, you set your thermostat at 70 and the swing is set at 10 degrees. Then the furnace will turn on 5 degrees below 70 and shut off 5 degrees above 70. Check you thermostats manual if it has this option.

Mar 15, 2016 | Heating & Cooling

1 Answer

The unit is on Heat, Fan Auto it's 36 degrees outside, Thermostate set on 73 Actual temp inside 70. Unit runs continuously. How can I get more heat. I tried Emergency heat and that doesn't help.


Have you cleaned the air return filters ? Wash them, don't vacuum or brush them. It damages the filter screen. Sometimes a thermostat will be out by a few degrees. If the filters are clean, try turning the temp down a bit to 65 degrees and see if the air con shuts down. ( If your room temp is showing 70, it should switch off the machine) If it doesn't turn off, keep reducing the temp by 5 degrees at a time and wait a few minutes each movement to see if and when it shuts down. If the machine keeps running, I would suggest your thermostat is shot and you will need a new one.

Jan 04, 2016 | Heating & Cooling

1 Answer

I have a Braeburn 3200 and when the the temperature reaches the desired heat setting. The furnaces heat will shut off, but the fan will continue to run indefinetly. eventually blowing very cold air up


The fan relay is stuck in the on position. When the temperature drops the heater does not ignite because the fan is already running and ignition is locked out after the heat cycle starts an the fan turns on

Nov 16, 2014 | Heating & Cooling

1 Answer

Coleman evcon furnace


Hello,

So the furnace will come on and heat sometimes ? Then other times it will click but not heat ?

Check for fault codes if it has them and make sure it is clean inside burner tubes and clean the flame sensor.

Oct 13, 2013 | Heating & Cooling

1 Answer

The furnace will light up and the fan will blow but the flames cut out before my house reaches temp. i have the thermostat set at 70 and the house will not get above 55. i have tried turning the propane...


First, for those of you who might not know, "What is a flame sensor?" A flame sensor is a safety device. When your furnace's main burners ignite (light Up) the flame sensor picks up the heat from the furnace's main burning and says, "YES," and sends a signal back to the main furnace control board saying that it is OK to let the main burner stay on. Or if the main burners do not ignite, the flame sensor does not pick up the heat and says, "NO" to the main control board, Shut That Gas Valve and Main Burners Down! Thank God we have safety controls like the flame sensor. Most of the time, after turning your furnace's power off, you may clean the flame sensors with light sand cloth, emery cloth or steel wool. Reinstall the flame sensor and you are back in business! Over the years flame sensors can build up a light coating of burned-in dust and dirt. This insulates the flame sensor so that it doesn't sense the heat of the flame well enough, so by cleaning it you have almost restored it to its new condition. Seldom, but sometimes they do go out completely.

Dec 08, 2010 | Coleman Heating & Cooling

1 Answer

Furnance kicks on but will only heat to about 13- 14 degrees then kicks off.... this happened last year and it was the flame sensor so it could be that again if so where is the flame sensor located? or...


usually if the flame sensor is dirty, the burners will light and then go out after about 3-4 seconds. it sounds like your furnace is staying lit for quit awhile and i would not suspect a flame sensor. I would look more at an air flow issue. if the furnace it running long enough to warm the house up 13-14 degrees. i would check the air filter to see if it may be dirty or even if you have a large enough opening for the filter to allow good air flow. you could have a situation were you are either not getting enough air to the furnace, or not being able to get rid of the heat being generated and causing the furnace to shut off on high limit. normally if a furnace shuts off on high limit, the fan will continue to run until it cools down and then it will fire back up. this may continue a few times. sometimes if a furnace trips on high limit too many times, it will lock out for a few hours before trying to light again. I would make sure you have plenty of air getting to the furnace and make sure all the supplies are open and not blocked. is this a problem that just started. did you just purchase the house and it has always worked this way. any information regarding the history of the unit would help narrow down the problem. also if the unit has a/c on it, it may have a dirty coil that is restricting air flow.

Nov 19, 2010 | Heating & Cooling

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