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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My furnace can only works for a few seconds. yes, it looks

Customer Question

hi, my furnace can only works for a few seconds.
JA: Did you check the furnace's filters?
Customer: yes, it looks new.
JA: Do you plan on doing the work yourself?
Customer: yes. I want to try first.
JA: Anything else we should know to help you best?
Customer: it can only ifre a minute around, then stop, but the blower is still running.
Submitted: 7 days ago.
Category: HVAC
Expert:  Rick replied 7 days ago.

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situation.

What is the brand and model number of your furnace?

Customer: replied 7 days ago.
Carrier, two years old.
The furnace can only fire one minute, then shut off, the blower is still running
Expert:  Rick replied 7 days ago.

I'm going to open this up to my colleagues so one of them can help. Please don't respond (even to acknowledge this post)until you get a response from us. If you respond first it will only delay your answer.

Expert:  Airheatman replied 7 days 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:

If furnace is not coming on, there should be an error light flashing on the control board in blower compartment to indicate what has failed. If you can locate this and tell me the pattern of the flash, that will point us in the right direction for troubleshooting.

Also let me know if you have a multi meter for troubleshooting.WE will go from here.

Customer: replied 7 days ago.
The model number is ***** another number is *****
Expert:  Airheatman replied 7 days ago.

When furnace fails what is the error light doing?

Customer: replied 7 days ago.
Nothing show up
Expert:  Airheatman replied 7 days ago.

When it fails we should get a code indicated by short and long blinks, EX 1 short and 3 longs indicates an open limit

Expert:  Airheatman replied 7 days ago.

Is light solid?

Customer: replied 7 days ago.
If I open the cover, it will shut off the powere.
Customer: replied 7 days ago.
I can't check from outside.
Expert:  Airheatman replied 7 days ago.

OPen cover. Hold door switch down and watch light

Customer: replied 7 days ago.
It starts at flash, then turn yo solid, and furnace start to running. After 9 minutes, the furnace shut off, the light turn to flash.
Expert:  Airheatman replied 7 days ago.

Pattern of flash? (Example 1 short, 2 long etc)

Customer: replied 7 days ago.
Didn't check. I am out of the house, can I check later?
Expert:  Airheatman replied 7 days ago.

Yes pattern will tell us where to start troubleshooting

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