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Marc, Plumber
Category: Plumbing
Satisfied Customers: 1126
Experience:  Plumbing heating & home maintenance contractor
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I need help again with my Carrier natural gas furnace I last

Customer Question

I need help again with my Carrier natural gas furnace I last called you on Oct. 27/15 about it not working we got it running but I had always suspected we got lucky some how by playing around with the tumbler resets(I may have forgotten the terminology.)
I have a Carrier model # *****
Series # ***** Manufacture date Sept./2002
The thermostat seems to be sending as I get a blinking line next to the heat(fire) symbol on the stat.
There has always been and still is a strange buzzing /humming like sound when I power up the furnace that comes from the furnace itself, when power is disconnected the sound stops.
Preformed a Component test Com 24 to Test/Twin.
LED flashed 4 short and 5 long starting with a long flash first then alternating short to long 4 times.
Submitted: 1 year ago.
Category: Plumbing
Expert:  Billy replied 1 year ago.


Please do the following:

thermostat set to off

turn power to furnace off

turn power back on 10 seconds later

see if light is solid

turn thermostat to heat

tell me blink code..

wait 2 minutes

then tell me that blink code also.