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Furnice shut off

Our furnace is maybe 5-7 years old. It just shut off and won't come back on. I checked all the breakers... possible problems?

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Need aalot more info,,,gas or electric furnace is it doing anything at all,,when u call for heat?

Posted on Oct 25, 2008

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Furnace keeps tripping the breaker changed breaker and wires all good up to the furnace still keeps tripping when i try to turn power on. nothing happened to the furnace and the wires were tested up to the...

Disconnect the black power wire where it is connected to the furnace with breaker off. Put a wire nut on it and then turn the breaker on. If it continues to trip, the problem is not the furnace and you will have to trace the power wire back to the breaker box to find problem. Next, disconnect the black wire from the breaker (with breaker off) and then snap breaker on. If it trips, bad breaker. If the furnace was disconnected and breaker did not trip, you have a short either on the P C Board or the transformer.

Mar 31, 2011 | Heaters

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In very very cold weather, our furnace is shutting down. Furnace is a lennox, about 17 years old The closest they've come to figuring it out appears to be that it's either overheating, or isn't starting...

I need a little more info I feel certain I can solve the problem I need to know a couple of things.

1- Model # of the furnace, take off the top door look to your right or left you will see a little metal data plate on the top of the plate you will see the model # If it is a horizontal furnace the data plate will be on the same side the controls are on .

2- Is the furnace a natural gas, LP gas, fuel oil or electric?

3- Does it do this when the temperature is above freezing?

4- If you could list the parts replaced it would be helpful.

A furnace properly maintained can last upwards of 25 years.

Dec 09, 2010 | Heaters

2 Answers

Hi, I have a Janitrol GMPN060 natural

HI Check you air filter in clean , jump out the pressure switch see if it starts are the fan motors clean also check out the fan control hope this helps

Feb 12, 2010 | Heaters

1 Answer

Can i shut down the gas furnice to change the air filter with out touch the temotast??

Yes you can and if originally installed by code ther
should be either a fused disconnect or a breaker mounted on the furnace. The fuse will have a cover
and a black switch below or above it.

If nothing is there but romex wire cable, then it is
hard wired in and most likely will have to be shutoff
at the fuse or breaker panel.

It is more dangerous to turn off at the fuse or breaker
panel. I recommend shutting the thermodtat to
the off position. If the furnace is within 10 years
old you could remove the top door and then lower door. The lower door when in place holds a switch
in that lets the power pass through it, when removed
your furnace should not operate.

Take my advive3 and do the simple thing and turn
the thermostat to the off position.

Jan 16, 2010 | Dayton Gas Furnace Heater

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Goodman GMP Furnace problem. Original problem is

Good one! Is the flame getting to the flame sensor within the few seconds? Maybe a good cleaning of the burners or flame tray would help. 1.3 ma is enough for the flame rod to tell the board to stay on. Re-do all the ground connections both at the board and furnace cabinet to be safe. Check the polarity of the power going to the furnace. What are the chances the second board is bad?

Jan 15, 2010 | Goodman Heaters

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Lennox furnace 17 yeanrs old. flame comes on and the shuts down sometimes right away some times in a few minutes. We have the furnace go down to 58 at night. It takes all day to get back to 67.

Sounds like a dirty flame sensor.
Also 9 degrees is a large swing to recover. Most specialist will advise no more than a 5 degree set back, otherwise recovery time eliminates any savings you may achieve.

Dec 05, 2009 | Dayton (3E407) Heater

1 Answer

Rudd Gas Furnice will not stay lite. I have tried by passing the thermostat and it still goes the same thing. I will run for about 30 seconds then shuts off the gas. It will relite after about 2 minutes...

This usually caused by a dirty flame sensor. This is typically a small round rod with a ceramic base. the rod will be mounted directly in front of one of the burners with the rod in the flame. To clean it....
  1. Turn off power to the furnace.
  2. Remove the flame sensor.
  3. Clean the rod with steel wool ( never use sandpaper! )
  4. Remount the sensor.
  5. Turn the power back on.
  6. Check operation of furnace.
This is usually all it takes to fix it.

Oct 18, 2009 | Heaters

1 Answer

Goodman GDT070 furnace pressure swich problem.

Inspect both the intake and exhaust pipes for blockage or debris. Inspect the small tubes that go from your combustion fan to the pressure switch and the tube that goes from the fan to the condensate drain. They all should be clean and dry. Inspect the combustion fan to see if it spins without it scraping on the housing or it may be filled with water or debris. Last, check the air filter and clean or replace.

Oct 10, 2009 | Heaters

1 Answer

Goodman furnace

sounds like the fan switch in the furnace is coming on and off. This is common for Goodman. or could be the heat anticipator on the t-stat. While there are several reasons this happens these are the most common.


Oct 29, 2008 | Heaters

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