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Posted by on January 26, 2009, 7:02 pm
Hello, I have a model FSU2x2400A air handler and a condenser model
EQ71924434. The unit will run for a hour and a half and trip 5 amp
control fuse. the tstat was replaced the control board in air handler
was replaced. the defrost control board and coil temp sensor was
replaced the unit still trips fuse in a hour and a half. the unit
works well in heat mode cool mode and emergency heat
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Posted by Bubba on January 26, 2009, 7:59 pm
On Mon, 26 Jan 2009 16:02:52 -0800 (PST), robbie.hall@yahoo.com wrote:
>Hello, I have a model FSU2x2400A air handler and a condenser model
>EQ71924434. The unit will run for a hour and a half and trip 5 amp
>control fuse. the tstat was replaced the control board in air handler
>was replaced. the defrost control board and coil temp sensor was
>replaced the unit still trips fuse in a hour and a half. the unit
>works well in heat mode cool mode and emergency heat
Too bad your mechanic is a parts changer. Start looking outside.
Pay attention to the defrost cycle.
Bubba
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Posted by Bipolar Bear on January 27, 2009, 12:45 am
> On Mon, 26 Jan 2009 16:02:52 -0800 (PST), robbie.hall@yahoo.com wrote:
> >Hello, I have a model FSU2x2400A air handler and a condenser model
> >EQ71924434. The unit will run for a hour and a half and trip 5 amp
> >control fuse. the tstat was replaced the control board in air handler
> >was replaced. the defrost control board and coil temp sensor was
> >replaced the unit still trips fuse in a hour and a half. the unit
> >works well in heat mode cool mode and emergency heat
> Too bad your mechanic is a parts changer. Start looking outside.
> Pay attention to the defrost cycle.
> Bubba
probly just a bad thermostat...
Still, suggest have a tek reset the defrost jumper to the 60 minutes
position and keep him on full time so he can sit there and replace the fuse
every hour on the hour--hint if you supply enough beer also have him piss on
the outdoors unit just prior the fuse replacement.
--
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Posted by on January 27, 2009, 10:25 am
> On Mon, 26 Jan 2009 16:02:52 -0800 (PST), robbie.h...@yahoo.com wrote:
> >Hello, I have a model FSU2x2400A air handler and a condenser model
> >EQ71924434. The unit will run for a hour and a half and trip 5 amp
> >control fuse. the tstat was replaced the control board in air handler
> >was replaced. the defrost control board and coil temp sensor was
> >replaced the unit still trips fuse in a hour and a half. the unit
> >works well in heat mode cool mode and emergency heat
> Too bad your mechanic is a parts changer. Start looking outside.
> Pay attention to the defrost cycle.
> Bubba
the unit was installed a year and half ago with no issues till now, a
new defost control board and coil temp sensor was replaced, the
reversing valve switches from heat to cool, I also believe it is
something to do with the defrost cycle. the unit had a older t-stat
replaced with a white rogers, replaced control board in air handler
also just trying to figure out what is going on, checked all wiring
continuity thought of a possible short, I guess the next thing would
be is check the charge, could be low causing coil temp sensor not to
make to let it go in defrost
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Posted by Bubba on January 27, 2009, 7:15 pm
On Tue, 27 Jan 2009 07:25:00 -0800 (PST), robbie.hall@yahoo.com wrote:
>> On Mon, 26 Jan 2009 16:02:52 -0800 (PST), robbie.h...@yahoo.com wrote:
>> >Hello, I have a model FSU2x2400A air handler and a condenser model
>> >EQ71924434. The unit will run for a hour and a half and trip 5 amp
>> >control fuse. the tstat was replaced the control board in air handler
>> >was replaced. the defrost control board and coil temp sensor was
>> >replaced the unit still trips fuse in a hour and a half. the unit
>> >works well in heat mode cool mode and emergency heat
>> Too bad your mechanic is a parts changer. Start looking outside.
>> Pay attention to the defrost cycle.
>> Bubba
>the unit was installed a year and half ago with no issues till now, a
>new defost control board and coil temp sensor was replaced, the
>reversing valve switches from heat to cool, I also believe it is
>something to do with the defrost cycle. the unit had a older t-stat
>replaced with a white rogers, replaced control board in air handler
>also just trying to figure out what is going on, checked all wiring
>continuity thought of a possible short, I guess the next thing would
>be is check the charge, could be low causing coil temp sensor not to
>make to let it go in defrost
Id be looking outside for a short in one of the low voltage wires. The
ones down in the unit where they are touching the copper. L.P. swich,
H.P. switch, sensor, RV solenoid, etc.
Bubba
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>EQ71924434. The unit will run for a hour and a half and trip 5 amp
>control fuse. the tstat was replaced the control board in air handler
>was replaced. the defrost control board and coil temp sensor was
>replaced the unit still trips fuse in a hour and a half. the unit
>works well in heat mode cool mode and emergency heat