On 11/3/2015 11:46 PM, Micky wrote:
I just checked and with the furnace running, there is between 1.6 and
1.9 volts AC across the thermostat heat terminals (red and white). Out
of 24. That really is far too high, unless someone can give me a
good explanation.


"with furnace running". You do realize you're
reading across a closed switch?

What voltage with furnace NOT running?

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Christopher A. Young
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