Furnace on the fritz

[TLO]

Last night as I got home from work I noticed my home was cooler than usual. I checked the thermostat, saw it was calling for heat, and headed to the furnace itself to see if I could figure anything out.

Anyway, I noticed that the furnace was trying to kick on, but would shut itself down after about 5-8 seconds. I noticed a light on the circuit board that would come on as the furnace was trying to start up, but then would turn off like the system was cutting power.

Anyone have any thoughts on what may be wrong?

[TLO]

Originally Posted by Shiver Me Timbers

Same thing has happened to my primary furnace twice. there was a light blinking and the pattern or color (cant remember) indicated what was wrong
We had to have the thermocoupler replaced. I keep an extra one just in case. 5 min job to swap out.

https://www.hvac.com/expert-advice/f...e-replacement/

Unfortunately I don't have any blinking error codes. The whole thing just cuts power.

[TLO]

Originally Posted by htismaqe

Did you isolate the thermostat yet and make sure it's not the problem? You can take the thermostat off and hardwire it (by twisting the two wires together, I don't remember which two).

I've got a tech scheduled to come out and look at it.

[TinyEvel]

Is there a blinking red light visible through a tiny window in the panel? When the furnace has issue the light will blink for a certain number of blinks, and you can look that up in your manufacturer's troubleshooting manual.

Mine was a Lennox and three blinks in a row meant the induction motor was out.

There is a little blower motor on your furnace that kicks in to create an airflow heading from the burner out of the exhaust so when the burner kicks on the exhaust is already flowing out of the vent pipe. When that little motor goes, the furnace won't kick on.

I've replaced mine by myself in two homes.

Basically an easy step by step unbolting the old one and bolting the new one in and plugging the wire terminal block into where where goes.

check the blinking light series.

[PatMahomesIsGod]

Antifreeze is low.

[TLO]

Originally Posted by TinyEvel

Is there a blinking red light visible through a tiny window in the panel? When the furnace has issue the light will blink for a certain number of blinks, and you can look that up in your manufacturer's troubleshooting manual.

Mine was a Lennox and three blinks in a row meant the induction motor was out.

There is a little blower motor on your furnace that kicks in to create an airflow heading from the burner out of the exhaust so when the burner kicks on the exhaust is already flowing out of the vent pipe. When that little motor goes, the furnace won't kick on.

I've replaced mine by myself in two homes.

Basically an easy step by step unbolting the old one and bolting the new one in and plugging the wire terminal block into where where goes.

check the blinking light series.

No blinking lights. Just one red light that comes on when the furnace is trying to kick on and then goes off when it powers off

[TinyEvel]

Originally Posted by TLO

No blinking lights. Just one red light that comes on when the furnace is trying to kick on and then goes off when it powers off

weird. usually that light will go into a sequence when the unit faults. Check the model number and google that name model and the issue.

[Dunerdr]

Have you tried cleaning the end of the igniter? Mine would click and when it failed to ignite no gas would come through either.

[TLO]

Well the tech just showed up. He looked at it for all of 1 minute and said, "Yep, you're going to need a new board." I'm a little hesitant, but he's the professional I guess.

[ptlyon]

Hardware sometimes breaks. Software sometimes works.

[TinyEvel]

Originally Posted by TLO

Well the tech just showed up. He looked at it for all of 1 minute and said, "Yep, you're going to need a new board." I'm a little hesitant, but he's the professional I guess.

what's the damage?

[TLO]

Originally Posted by TinyEvel

what's the damage?

Couple hundred bucks for the new board. Has to be ordered though, 2-3 days for delivery

[ptlyon]

Baby it's cold outside

[TinyEvel]

Originally Posted by TLO

Couple hundred bucks for the new board. Has to be ordered though, 2-3 days for delivery

Not terrible. Luckily that's on the low end of boards cost spectrum. Labor will likely be more. put on a sweater and shop for playoff tickets.

[TLO]

Originally Posted by TinyEvel

Not terrible. Luckily that's on the low end of boards cost spectrum. Labor will likely be more. put on a sweater and shop for playoff tickets.

Not too worried about the price. I just wish they could get it here sooner. We have a 9 month old in the house so that's my main concern.

We'll get by with a couple space heaters.

[scho63]

Originally Posted by New World Order

That sounds like a hit song

"If you're blue, and you don't know way to do,
Why don't you go where your heater sits?
Furnace on the Fritz

CP types who need a warm coat today
Pants with flannel and fur coat, perfect fits
Furnace on the Fritz

Dressed up like a KC Chiefs Trooper
Trying hard to look like Gary Cooper (super duper)
Come, let's mix where Rockefellers
Fight with sticks or booze in their pitts
Furnace on the Fritz