My outdoor compressor is running, but no air is blowing. There is alot of
condensation on the copper tubing just outside the interior air handling
unit in the basement, and there was even some ice buildup.
This is for my basement and first floor, and fortunately my heat pump for
upstairs is working.
Last winter they had to replace a controller on my furnace which is needed
for both heating (oil heat) and cooling.
I'll call the HVAC in the morning. Meanwhile, any ideas what the problem
yep clogged filter can do that, leave unit off for a few hours, it may
have frozen up
Dumb question - you mean the air filter that occasionally is pulled out,
cleaned, and reinstalled, or some other filter?
If you have ice, you could be low on refrigerant in the system or not enough
air is flowing over the coils. Check the filter and also see if the fan in
the air handler is running and if belt driven, see if the belt is ok.
On Thu 05 Jun 2008 07:31:47p, Dimitrios Paskoudniakis told us...
Yes, an inoperable blower could definitely cause the ice and condensate
because there's no air traveling across the coils to carry the cold from
them. It is possible, however, that you could also have low refrigerant.
But I'm betting on the blower.
See if you can manually turn the fan at your thermostat. There should
be a switch for the fan that has 2 positions: AUTO and ON. Turn it to
ON. If the blower comes on, then its something in the control board or
the wiring. You should still be able to run the A/C with the fan set
No, the blower motor not running is most likely the cause of the freeze-up,
not the other way around, unless the motor is very hot. Shut the system off
until you can get it repaired. Do not let the compressor in the outside unit
run until you get the blower motor running again and have good air flow. You
may have a bad motor or whatever controls the motor. You may also have a
tripped circuit breaker that powers the inside unit.
There is a possibility that low refrigerant gas has caused the evaporator
coil to ice over. This can cut off the air flow and cause the blower motor
to overheat. If this happens either its safety switch will cut it off or it
can burn out.
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