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hfreaves · 09-08-2009, 08:53 PM

Timothy (and all),
Thanks for the response. It turns out the 12V to the thermostat is routed through the PC board controlling the furnace, and the 12V wire to that board was loose. (I think I may have pulled on that wire getting some kitchen tools out from behind the drawer, just over the furnace.) Re- seating the supply wire terminal and turning the external furnace switch to 'ON" solved the problem. I've since connected the 12V feed to the thermostat directly to the 12V feed to the furnace, so that the furnace swith position has no effect on the A/C contol by the thermostat.

Thanks again, all.

09-08-2009, 08:53 PM	#4
hfreaves Junior Member Join Date: Sep 2009 Posts: 2	Timothy (and all), Thanks for the response. It turns out the 12V to the thermostat is routed through the PC board controlling the furnace, and the 12V wire to that board was loose. (I think I may have pulled on that wire getting some kitchen tools out from behind the drawer, just over the furnace.) Re- seating the supply wire terminal and turning the external furnace switch to 'ON" solved the problem. I've since connected the 12V feed to the thermostat directly to the 12V feed to the furnace, so that the furnace swith position has no effect on the A/C contol by the thermostat. Thanks again, all. __________________ Hugh F Reaves