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-   -   No voltage at thermostat (http://www.houserepairtalk.com/f8/no-voltage-thermostat-17852/)

Lancerdad34 07-14-2014 08:54 PM

update
 
2 Attachment(s)

Since my last post I was able to get the blower motor running from the thermostat set on cool. The compressor would not start unless I pushed in the contactor. I measured the voltage on the circuit board Y C was 14.5 and G C was 11.5. The voltage at the wires outside was about the same.
After all that testing I smelled something burning at the furnace and sure enough the transformer burned up. Not sure if I should try another unless I put an inline fuse in the 24 line coming out to protect it. I sent a couple of pics. Thanks!

Brian


Lancerdad34 07-14-2014 08:54 PM

update
 
2 Attachment(s)

Since my last post I was able to get the blower motor running from the thermostat set on cool. The compressor would not start unless I pushed in the contactor. I measured the voltage on the circuit board Y C was 14.5 and G C was 11.5. The voltage at the wires outside was about the same.
After all that testing I smelled something burning at the furnace and sure enough the transformer burned up. Not sure if I should try another unless I put an inline fuse in the 24 line coming out to protect it. I sent a couple of pics. Thanks!

Brian



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