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Hello, had you just replaced the thermostat? if so, tell me which color wires were connected to which terminals on the OLD thermostat, and which color wires are now connected to which terminals on the new thermostat... if that's not the case tell me in detail when this problem began and a lot about your technical skill sets so that I can coach you most effectively.
Thanks, ***** ***** incorrectly, but I need to see a close up, exceedingly well focused photo of the wiring diagram glued to the inside the same compartment door that covers the printed circuit card
There are also dip switch settings that need to be set (page 24)
We can go from there.
Great. I will be here
If you get zero voltage readings between R and C check fuse just below that terminal strip with a 3 or an E on it
If the fuse is blown replace with a 3 amp automotive type fuse.
Leave the blue disconnected on both ends.
We can go from there