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Aztec celair Pilot light on. When Low Fan setting is chosen, heater doesn't fire up. Pilot light on. When Low fan setting is chosen, furnace doesn't fire up. with Low Fan setting doesn't comedoesn't fire up at

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: electric furnace/heater pump/fan unit won't shut off

There are dip switches on the main board.. When you remove the lower panel on the air handler there are instructions to where the dip switches should be for your units fan control. if the switches are in the correct configuration.. The Thermostat may be malfunctioning or not wired properly. and last.. and most expensive.. the motherboard may also be failing.

Posted on Jan 12, 2009

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SOURCE: Oil furnace fan on all the time

who cares

Posted on Feb 06, 2009

clyde2j2
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SOURCE: Dayton Furnace - Pilot Light Goes Out but Fan keeps running?

Pilot lighted furnaces have a thermocouple made from disasimilar metals that when heated create electricity to actuate a relay that alows the gas to flow to the furnace.

When the thermocouple gets coated with carbon from the pilot lights constant burning it acts as an insulator and keeps the thermocouple from getting enough heat to generate electricity, a very good safety factor.

What you have to do is locate the thermocouple it should be located over the pilot light, you will see a gray substance around the thermocouple it will be hard like cement, take a knife and scrape away as much of the gray material as possible then sand the themocouple with a medium sandpaper until it shines, use one of you wifes emery boards, this should solve your problem.

Posted on Feb 24, 2009

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SOURCE: heater motor,fan making noise

Check to see if something is in the fan blades that is throwing it off balance. Also check the belt to see if it is ready to break.

Posted on Oct 02, 2009

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SOURCE: Brivis Upflow/Downflow fan on continuously, no heat

depending on the year of the unit

if its between 1992-1999 it would be caused by the either the pilot not staying alight, or a faulty gas valve not opening,
These models start the fan on a time delay not tempreture so you will only get cold air circulating and when the thermostat is off the fan will stop.
(All models) if the fan is running regardless of the thermostat position an over heat sensor is faulty.

Posted on May 17, 2010

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