I have a circa 1992 Day&Night downflow gas furnace with A/C cooler added
on. Recently the blower stopped running. The A/C compressor runs, but
the blower will not move the cool air. Setting the thermostat fan from
AUTO to ON results in a relay clicking noise in the furnace. I checked
all the house circuit breakers and furnace circuit board in-line fuses.
The blower squirrel cage moves easily by hand, so it is not jammed. I
checked that the over-temp limit switch is reset. I had a service person
in to look and he stated that there was no voltage going to the blower.
He would do a circit board replace for $420. I said give some time to
Does this seem reasonable? Is this a fair price? Is there something else
anyone can suggest?
most cent. a/c units have a box(on/off switch in the attic where the
blower is located.. if it is in the off position or in some cases the
oil/grease inside will melt down and insulate the contacts and you get
no voltage to the a/c blower in the attic....
did the a/c guy check to see if there was voltage going to the who
unit?? if not or in doubt get up there and check for yourself....
This is an A/C add-on to the Day&Night. The chiller coils are mounted
just below the "down-flow" furnace in the central closet (this is
California, no attic, no basement :) ). I can hear/see the A/C
compressor/fan running outside. I can feel (hand on pipe) the cold
working fluid enter the in-house coils below the furnace.
The furnace blower is used to circulate the chilled air throughout the
house. That is what is not working.
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