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Carrier Weathermaker 8000 - furnace does not ignite

My heating system will run perfectly for about 24 hours, then suddenly the furnace will no longer ignite and the system will just continue to blow cold air. The LED light flashes one long and 3 short flashes (I don't have the codes), and the only way to get it working again is a reset (shut off the power to the system). Any ideas? Thanks

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  • psingh2000 Jan 13, 2009

    I have the same since last two days

  • Anonymous Jan 22, 2009

    I have the same problem, changed the thermostat and cleaned the inside of the furnace (it was dusty in there) now I am going to change the heat sensor.

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Having a problem with a weather maker 8000. It will not come on at all unless I shut down the switch on the side of the furnace. filters is clean. it will start to light then stop

Posted on Dec 20, 2008

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I have a Carrier Weathermaker 8000 furnace. it will not light.I tested the igniter on my upstairs furnace and it will glow and light that furnace. I can manualy light the furnace with a match. flame sensor...


If you're sure the igniter is good and the controller is sending voltage to gas valve to open, but not to the igniter then, yes, the controller is bad. The only way to know for sure is to remove the igniter's molded plug from the board and test voltage directly at the board. You should get about 100-120 vac to the igniter.

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I have a new home 1 yr and when the furnace kicks in, I am assuming the fan it makes a noise but as soon as the heat starts the noise is gone, could this be the furnace blower


Check by turning the unit off and turn the fan to on. Do you hear the noise now? The noise your hearing could be coming from your combustion fan assembly instead. Newer furnaces have a in-shot burner and are nosier than the old style of heater.

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easy way to fine the high usage is to turn everything off and watch your meter and have someone start turning thing back on and watch for the most usage of power

Jan 25, 2009 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

Furnace wont run


First of all when you flip the switch, it goes thru a startup sequence. THEN it turns on the Igniter (notice the red glow). Then the gas turns on.

Now at this point check the idiot light and it should be giving you a code of 34. That 34 (3 shorts 4 longs) says that there was a problem igniting the furnace. After it cycles thru at least 4 times and fails to ignite all the blowers, then is when you get a code 14 (1 short 3 longs)

NOTICE what's happening with ALL the burner Tubes each time it attempts to ignite. If only one or two are running....then this is your problem.
To fix all you do is take out the burner Tubes, look for debris, blow them out (blow from the front where all the jets are), and replace them in sequence from left to right (the tabs overlap).


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1 Answer

Hello my name is veronacarrier 8000 weathermaker will not ignite


call the furnace repairman. you have a fairly easy repair but the parts are expensive

Dec 13, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

NO HEAT???? freezing


go to the furnace, there should be a service switch on the outside of the unit.  make sure the door is on good, does the blower motor come on?

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1. check indoor unit wiring.
2 check sensar of thermostate.
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Carrier furnace weathermaker 8000


. Several times of recyling power normally brings the furnance up. Though the failure code has always been 31, there are several different behaviour when the blower starts after reset :
a. blower simply creases.
b. there is an attempt to start the heating unit (I hear the high pitch noises), then everything stops.
c. there is an attempt to start the heating unit (I hear the high pitch noises), once I see the orange glow from the coil, normally the gas is lit up and the unit starts working.

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