Gas and Oil Home Heating Furnaces - Furnace works once per turn on...
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severeon
01-15-09, 07:40 PM
I know I have very little information and am terrible with the terminology; but, the previous owners felt it necessary to remove all branding marks on the heater. All I was hoping for was a suggestion of what to try...
Our natural gas furnace worked great for about 12 hours when we first got the gas turned on at our new home; but, now it only works after we turn it off at the thermostat for about 5-10 minutes.
The full order of events is as follows:
1. We turn the furnace on, and it ignites/works just fine for one cycle; as to say, hot air comes out of the vents for about 5-10 minutes.
2. The burners shut off and the blower stays on, which blows out slightly colder air for a few minutes.
3. The burners light again, but only for 5-10 seconds and then go out. At this point it just keeps repeating for about 30 minutes if we leave it on.
To get the furnace to work again for a single cycle we have to turn the thermostat from heat to off and let it sit there for 5-10 minutes, then turn it back on. If we let it stay off for any less time, it will just do what I described in step 3; at which point we have to turn it off again for 5-10 minutes.
If anyone could give me a suggestion I would be very appreciative since it has been well below freezing every night for the past few weeks.
Our natural gas furnace worked great for about 12 hours when we first got the gas turned on at our new home; but, now it only works after we turn it off at the thermostat for about 5-10 minutes.
The full order of events is as follows:
1. We turn the furnace on, and it ignites/works just fine for one cycle; as to say, hot air comes out of the vents for about 5-10 minutes.
2. The burners shut off and the blower stays on, which blows out slightly colder air for a few minutes.
3. The burners light again, but only for 5-10 seconds and then go out. At this point it just keeps repeating for about 30 minutes if we leave it on.
To get the furnace to work again for a single cycle we have to turn the thermostat from heat to off and let it sit there for 5-10 minutes, then turn it back on. If we let it stay off for any less time, it will just do what I described in step 3; at which point we have to turn it off again for 5-10 minutes.
If anyone could give me a suggestion I would be very appreciative since it has been well below freezing every night for the past few weeks.
xpogi
01-15-09, 09:18 PM
I know I have very little information and am terrible with the terminology; but, the previous owners felt it necessary to remove all branding marks on the heater.
That's a bummer, and maybe illegal you might consider contacting an attorney or at the very least the agent who sold you the home.
But in the mean time we will need to know a little more about the furnace if we are going to help you. What ignites the burners? Pilot light, spark, or hot surface igniter? Does it have a circuit board? Is there a diagnostic LED light that flashes after the furnace tries to light the second time? How many flashes?
That's a bummer, and maybe illegal you might consider contacting an attorney or at the very least the agent who sold you the home.
But in the mean time we will need to know a little more about the furnace if we are going to help you. What ignites the burners? Pilot light, spark, or hot surface igniter? Does it have a circuit board? Is there a diagnostic LED light that flashes after the furnace tries to light the second time? How many flashes?
severeon
01-15-09, 09:48 PM
It is lit by a hot surface igniter, and the only thing I have seen the LED do is stay solidly on.
The only thing I have gotten so far as advice, from things that are sort of similar, is to clean the flame sensor which I will try now since it seems to be a pretty easy thing to do.
The only thing I have gotten so far as advice, from things that are sort of similar, is to clean the flame sensor which I will try now since it seems to be a pretty easy thing to do.
severeon
01-15-09, 10:02 PM
I just got ahold of the previous owners and found that it is a GMP075-3 furnace. Just FYI...
severeon
01-15-09, 11:03 PM
Well, I just wanted to let anyone who has this same problem know that I fixed it. All I needed to do was reach into the unit with an old clean toothbrush and clean off the flame sensor, which was located in the far left burners path.