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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
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: 11 months ago.
Category: HVAC
Expert:  Rick replied 11 months 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 11 months ago.
Carrier, two years old.
The furnace can only fire one minute, then shut off, the blower is still running
Expert:  Rick replied 11 months 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 11 months 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 11 months ago.
The model number is ***** another number is *****
Expert:  airheatman replied 11 months ago.

When furnace fails what is the error light doing?

Customer: replied 11 months ago.
Nothing show up
Expert:  airheatman replied 11 months 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 11 months ago.

Is light solid?

Customer: replied 11 months ago.
If I open the cover, it will shut off the powere.
Customer: replied 11 months ago.
I can't check from outside.
Expert:  airheatman replied 11 months ago.

OPen cover. Hold door switch down and watch light

Customer: replied 11 months 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 11 months ago.

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

Customer: replied 11 months ago.
Didn't check. I am out of the house, can I check later?
Expert:  airheatman replied 11 months ago.

Yes pattern will tell us where to start troubleshooting