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Posted by Rick on July 10, 2005, 4:32 pm
> No, nothing happens (other than the previously noted clicking sound)
when I
> select either Heat or Cool.
>
> This may be just strange coincidence but the unit wasn't working but
I had
> left the thermostat turned to Auto and Cool. We had a fairly strong
t-storm
> with heavy rainfall and the outside unit turned on and ran (and did
cool the
> house). Not sure how long it ran. This happened in the evening and
it
> wasn't functioning again in the morning when I got up.
>
> I also ran the fan at one point and then turned the stat to Cool.
The
> outside unit did kick in and run.
>
> This happened 24 hours+ ago and I have not been able to duplicate
the above
> since.
>
> Jim
Sounds like a bad connection in the outdoor unit.or a compressor
overload thermal switch . There should be a service disconnect outside
and near the unit. Try turning the disconnect on and off a few times
(if so equipped). It may not be a fused disconnect unless you have a
utility interruptible system (2 meters). If there are circuit breakers
in your panel, turn them off then back to on and see if that makes
things work. If you do decide to check connections, make sure you
throw the disconnect and lock it out!
I have to say I'm not familiar with any interlocks that may exist in
a Lennox system so I'm hesitant to suggest jumpering the stat
terminals to see if everything will come on. It's rather puzzling that
the furnace blower motor does not come on when the stat is in auto
mode.
Good luck
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