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Posted by on September 17, 2007, 1:27 pm
> > When I first turn the system on, the small tube will stay warm for
awhile.
> > Takes an hour or more then it will get ice cold. The furnace filter is
new,
> > first thing I checked. All vents are wide open.
> >
> > Thanks for the replies!
> >
> >
> >
> >
> >
> > > Does the small tube get cold before the large tube gets cold? That
would
> > > tell us a lot. In any case, it sounds like something that needs a
repair
> > > guy.
> >
> > > --
> > > .
> > > Christopher A. Young
> > > Learn more about Jesus
> > > http://www.lds.org/portal/site/LDSOrg
> > > http://www.mormon.org/mormonorg/eng/
> > > .
> > > :
> > > :
> > > : Hi guys. We had a central air system installed about 2 years ago. It
> > > never
> > > : has really worked all that well. What happens is after the unit is
on
> > > for
> > > : about an hour or more, the unit inside the furnace freezes up. It
just
> > > : starts to blow semi cold / warm air. If I turn the unit off , it'll
thaw
> > > : itself out eventually and work again. I've had one guy come and look
at
> > > it
> > > : already and he says everything is working fine.. Obviously it's not.
> > > : Suggestions? The small tube going into the furnace gets ice cold
(Not
> > > : shielded). All the vents in the house are open. It's a 3 tonne unit,
> > > 1800
> > > : sq/ft house.
> > > :
> > > : Thanks
> > > :
> > > :
> > > :
> > > :- Hide quoted text -
> >
> > - Show quoted text -
>
> Often on an otherwise properly working unit that means the freon is
> low. But since it sounds like your unit has never worked properly
> there are many other things that could be the problem. The airflow
> over the inside coil could be too low. Was this unit added to an
> existing forced air heating system? The air handler inside needs to
> be rated to provide enopugh air flow for a 3 ton unit. The fan
> setting inside the unit needs to be on high for ac. It's not likely
> that you will be able to fix it yourself. Did you have the original
> installers try to fix it? How many times? Enough to figure out they
> are morons? You might need to get someone that knows what they are
> doing take a look at it, it's not likely that anyone will be able to
> diagnose it very well over the internet.
You suggest his blower needs to be on "high for cooling"?
Is that the setting you always use?
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