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wpm paul 01-06-2013 05:02 PM

carrier furnace
my furnace will run until the room is to the thermostat set temp. It then goes to the blower only. The led flashes 1 short 1 long then 3 short, it is 8 years old

hvac dude 01-06-2013 05:36 PM

hi on the panel some place on the furnace there should be a label explaining the codes ,, look see what code it is and let us know which saftey its going off on,,model number to will help

Tator1076 01-06-2013 08:18 PM

It 13 code. Limit or roll out switch. Check filter

wpm paul 01-06-2013 08:46 PM

the filter is clean

hvac dude 01-06-2013 08:47 PM

did you check the codes on the panel ?? thats where you should start

wpm paul 01-06-2013 09:07 PM

model # 58msa

hvac dude 01-06-2013 09:09 PM

wpm please look on the panel for codes it will sure speed up the process ty

kirwinjd 01-06-2013 09:17 PM

Check the description of the codes on the panel. It will tell you what's going on.
I don't have the codes memorized.

how 01-06-2013 10:07 PM

I believe a code 13 means that a limit or roll out switch has be activated for more than 3 minutes.
Either the furnace has been overheating/ the flame has been rolling out the front of the heat exchanger/ the limit or rollout switch is faulty.
This is code that may be indicating a serious monoxide condition.

Do you have a/c? (dirty coil?) Are all the heating and return vents open or uncovered? Do you have dirty air filters in the heating outlets?

A electrical meter will tell you if either the main limit or the roll out switches have tripped.
A temp rise test will tell you if the furnace is actualy overheating.


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