Bryant Plus 90i Model 355MAV042080FFK Gas Furnace - no light is on

Old 10-12-11, 06:31 PM
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Bryant Plus 90i Model 355MAV042080FFK Gas Furnace - no light is on

We have had our furnace serviced annually since it's installation 9 years ago. It was recently serviced 9/21/11. We were given the "all clear"

We turned it on for the first time last week, and the condensation pump immediately went out, so we replaced it last evening. Everything appeared to be fine until this morning - now there is no "pilot" or ignition light on and the fan is blowing cool air.

We did try the following: 1) turn therm stat down to it's lowest setting, furnace off, gas off, unplugged for 5 minutes as per the instructions on the furnace -and replaced batteries in therm stat (just in case). We still do not have heat.

Any advice as to whether it's the condensation pump or another issue? Also, what is the HIGH setting on the gas switch? we have High, Off, On.

Thank you!
Old 10-12-11, 07:24 PM
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Take the outer cover off the burner compartment of the furnace so you can see the gas valve.

When you turn the thermostat up to 80, what do you see happening at the furnace? Describe what you see in detail.

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