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Posted by on May 28, 2007, 10:46 pm
> Hi , I had a Lennox XC15 system installed last summer.
> The tech came out and said the condensor fan motor was shot, high
pressure
> switch tripped, preventing the unit from running.
>
> This thing has a system operation monitor, that should have flashed a
fault
> code. However the unit was installed with 2 wires, leaving the module
> without power. None of the diagnostic lights work.
>
> Are the control module diagnostics a useless feature ?
Yes, for competent techs.
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