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 works and furnace will run till thermostat turns it off.wires look good. Controer maybe???

Are the tips of the flame blue? You might need to adjust the air mixture sleeve on the burner.

Could well be the inducer motor Google carrier 31fault code there are 3 video's on this on u tube

Here is a link that might help. Even if it glows, it could still be bad, but it needs to prove air flow as well. Carrier Weathermaker 8000 Ignition Problem DoItYourself com Community...

you have a dirty flame sensor. just needs mantenance.

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).

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

1. check indoor unit wiring.
2 check sensar of thermostate.
3if not change thermostate