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Posted by Bob Simon on April 30, 2008, 11:05 am
wrote:
>My White Rogers programmable thermostat died yesterday. My wife came
>home and found the house "very cold" so she turned the system off.
>When I looked at the thermostat I found the LCD panel was backlit but
>wasn't displaying anything so I swapped it out for the old
>mercury-switch thermostat, which I had saved.
>
>In the process, I shorted a couple of wires together. I saw a spark
>and now there is no voltage between the red and blue (common) wires.
>None of my circuit breakers appear to be tripped but two adjacent
>breakers are linked and labled A/C so I toggled them anyway, which did
>not help. Are these two linked breakers likely just for the
>compressor or for the air handler also?
>
>I traced the thermostat cable up to the attic where they go into a
>side panel of the air handler cabinet (Goodman ARUF). I presume that
>the low-voltage transformer is inside, right? Are these transformers
>typically fused? If so, can you tell me where it is?
Never mind. I found the purple fuse and it's dead.
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