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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Furnace lights up n then shuts down we notated the led light

Customer Question

Furnace lights up n then shuts down we notated the led light non stop blinking goodman furnace chilly in house
JA: I'll do all I can to help, Goodman. Tell me a bit more about what's going on so we can help you best.
Customer: Put heat on all nozzles light 5 of them n then they start to dimmer n shut down n we cleaned flame sensor
JA: Sometimes HVAC issues that that you think will be really complicated end up being easy to fix. The HVAC Technician I'm going to connect you with knows all the tricks and shortcuts. Is there anything else important you think the HVAC Technician should know?
Customer: Do u need model number? N we also notated water on concrete as well
JA: I'm sending you to a secure page on JustAnswer so you can place the $5 fully refundable deposit now. While you're filling out that form, I'll tell the HVAC Technician about your situation and connect you two.
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Can you give me the complete model number on the furnace? It will be on a label on inside furnace panel just above burners.Remove panel to burner compartment and look inside. The model number will help me give accurate assistance for your specific unit.

Below is a link showing where to find label with model number:

http://i.imgur.com/EkrwIdi.jpg.

Tell me what the led light does when you first call for heat and then when burners shut off.

Customer: replied 1 year ago.
Gnmnt1004B
Customer: replied 1 year ago.
Calls for heat stays red ..after three tries to keep flame in nozzle it shuts down n the light blinks non stops when system shuts down it stops
Customer: replied 1 year ago.
Do u need Ken to go down n try it again?
Customer: replied 1 year ago.
Are u there?
Expert:  airheatman replied 1 year ago.

Sorry got a call right after replying.I am pulling a manual on furnace now

Customer: replied 1 year ago.
OK was getting worried it's chilly in house n it doesn't help me with being cold with thyroid problems
Expert:  airheatman replied 1 year ago.

Have him watch the blinks closely and tell me if there is a pause like 2 blink pause repeat, or 3 blink pause repeat etc.

Customer: replied 1 year ago.
Steady
Expert:  airheatman replied 1 year ago.

Have him try reversing the secondary leads from transformer to board.Just switch them around.

Customer: replied 1 year ago.
I am not sure what to do. Electric is not my thing
Expert:  airheatman replied 1 year ago.

I will guide you. Do you know what the transformer looks like?

Customer: replied 1 year ago.
NO what is the reason to do that
Expert:  airheatman replied 1 year ago.

You will have a red and blue wire coming from transformer.to the 9 pin plug. Pull them from the plug and switch them. The board is telling us polarity is reversed and suggests to switch these wires .See the link I sent.

Customer: replied 1 year ago.
How would parity get reversed
Expert:  airheatman replied 1 year ago.

Could be as simple as power company changing a transformer a block away.

Expert:  airheatman replied 1 year ago.

If changing polarity does not help, you will need a new board if we are getting a continuous blink.

Customer: replied 1 year ago.
OK but I do not know what transform looks like. I would have to go down and open up panel
Expert:  airheatman replied 1 year ago.

Yes I will be in the blower compartment.

Customer: replied 1 year ago.
Pk can u hold on
Customer: replied 1 year ago.
OK going back to unit
Expert:  airheatman replied 1 year ago.
Expert:  airheatman replied 1 year ago.

Just unplug and switch the red and blow low voltage wires at transformer

Customer: replied 1 year ago.
How about we take a picture n you tell us
Expert:  airheatman replied 1 year ago.

That will be great.

If you have a paper clip icon on your page you can attach using that link.Or

You can upload the pictures using the tiny pic site .

Here is a link to the site.

http://tinypic.com/

Click on Browse , select the file from your folder.then click UPLOAD NOW.

They will give you a quote to enter in the box to verify you are a human.Enter the quote and click UPLOAD NOW

You will see your picture on right side of screen.

Then copy the link URL for email & IM

Paste that link here on the site.

Customer: replied 1 year ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  airheatman replied 1 year ago.

I will be happy to assist by phone.

Expert:  airheatman replied 1 year ago.

If you would like to work by phone just accept offer and provide number.Otherwise we can continue here.

Customer: replied 1 year ago.
Why more money. It's ridiculous. The picture did not go through
Customer: replied 1 year ago.
He is already pissed that I paid so far
Customer: replied 1 year ago.
Not paying more
Customer: replied 1 year ago.
I guess this the end decision
Expert:  airheatman replied 1 year ago.

I have no problem working here.I received the requst thatYOU wanted a phone call.Did he do as instructed switchng the wires?

Customer: replied 1 year ago.
No we were not sure n picture didn't take we have no service at that part of the house.
Customer: replied 1 year ago.
There were three blues left hand side on top there was a black n white on the oppsite side was a red one n the top part was white not sure if that is it
Expert:  airheatman replied 1 year ago.

OK that would be first step to try based on Goodman manual.This is what the transformer looks like.Simply swap red and blue wires.

Customer: replied 1 year ago.
I have no red and blue wire on bottom.
Expert:  airheatman replied 1 year ago.

What color wires connect to the 24v terminals?

Customer: replied 1 year ago.
If I go in basement I lose i
Customer: replied 1 year ago.
I
Expert:  airheatman replied 1 year ago.

I understand. Go to basement. Locate the transformer, see what wires connect to the terminals on transformer labeled 24v and switch them to see if it makes a difference and furnace will work.

Customer: replied 1 year ago.
Going downstairs now
Expert:  airheatman replied 1 year ago.

Standing by

Customer: replied 1 year ago.
OK so am i
Expert:  airheatman replied 1 year ago.

Let me know if that helps.

Customer: replied 1 year ago.
I am waiting n I hope so finances are tight..
Expert:  airheatman replied 1 year ago.

I understand and understand the frustration.

Customer: replied 1 year ago.
We were burning through propane a few years ago when it vqas close to $4.a gal n I was flipping n we changed nozzles n it made a big difference
Customer: replied 1 year ago.
No good still going on n shutting off
Customer: replied 1 year ago.
When they light up there a bright n then you can see the light diming n then goes out
Customer: replied 1 year ago.
Ugh
Expert:  airheatman replied 1 year ago.

I think I would go ahead and call in a tech before just start replacing parts.The continuous flashing shows reversed polarity as you can see on the link I sent.You could have a defective board, but it is also possible there is a gas pressure issue.One quick question , are you sure tank has plenty of fuel?

Customer: replied 1 year ago.
40% we are all propane stove BBQ n dryer no problem
Customer: replied 1 year ago.
We ran it almost empty n never had a problem n how does it reverse it self?
Expert:  airheatman replied 1 year ago.

Yeah, could be a bad gas valve or board.I think I would call in a tech to verify unless you want to start replacing parts in which case I would start with board.I can request a refund of your money since we were not able to get your heat working if you would like.

Customer: replied 1 year ago.
OK how long does a board last
Expert:  airheatman replied 1 year ago.

Polarity can get reversed by utility company replacing a transformer on line, but more often than not it is a board issue.

Customer: replied 1 year ago.
I see sears carries the board for 135. Is it a easy swap? N should we reverse those wires
Customer: replied 1 year ago.
Our wires are under ground
Expert:  airheatman replied 1 year ago.

Boards can fail at any time due to the sensitivity to power surges and such. You can get a board online for about 75 bucks .

Customer: replied 1 year ago.
Do u have the part number n do u think we can change it ourselves? N yes s refund. Would be appreciated
Expert:  airheatman replied 1 year ago.

I can look up the part number for you and help you locate one if interested, but would not feel refund in order if I spend time doing the research for you.

Customer: replied 1 year ago.
OK I will find it myself...thank you still hoping refund would be applicable thank you
Expert:  airheatman replied 1 year ago.

No problem at all. Good luck with getting this solved quickly.

Customer: replied 1 year ago.
thank you n thank god its not winter but still chilly
Expert:  airheatman replied 1 year ago.

No problem at all. Good luck with getting this solved quickly.