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Heat Pump/Air Handler went out completely
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Zyp
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Posts: 140
Heat Pump/Air Handler went out completely
wrote:
On Nov 5, 8:31 pm, "Bumpy" wrote:
Any ideas about what could have gone so wrong, so quickly?
Follow your thermostat wires and they will probably go
into the air handler, if your have power to the air handler, then
you will probably have to open it up. The themostat wires go
into a circuit or panel to pick up the 24v, and there might be a
fuse in there that popped, or you might see the bad transformer in
there. You might even have a thermal ckt breaker trip on youre blower
motor, which might have tripped from overload due to a clogged
filter.
Just my 2 cents!
In reading the schematic it does show a 5 amp (auto type) fuse, which
I also would definitely think might be bad too, no idea why it would
have gone bad though.
phil
Phil;
Control transformers do not go out on their own. Somthing must short out
the connection and cause a failure. Check the 5 amp fuse. If it is blown,
you've got somthing that may be shorted. There is a line running to your
new outdoor unit that should have from 5 to 7 wires in the cable. If the
installer mis-wired the control board, he could have smoked the transformer
on the call for heat. Or, he could have mis-wired the defrost cycle wiring.
When the outdoor unit called for defrost, it signals the indoor unit to
energize the auxilary heat. So you should mention to your installing
contractor that maybe there's a problem and that he shouldn't charge you
until it's decided what the actuall failure is.
--
Zyp
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