Question about Honeywell Programmable Thermostat Heater
Hi, the only problem that it could be if the display and system is working good, is a faulty back light from the factory. All you can do is take your receipt and the stat back, and exchange it. It has nothing to do with the way it was wired, its just one of those things that happen from time to time. Even though its new doesn't mean it will work right. I know its a pain, but that is the problem as you have 24 volts there or the unit wouldn't run, and that voltage lights the back light, so its not right.
A/C, & Heating Contractor
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Posted on Oct 03, 2010
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Posted on Jan 02, 2017
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WARNING: When the thermostat is reset, all parameters (clock, configuration
and schedules) return to their default settings.
?? Open the thermostat's door.
?? Press and hold the Pgm button.
?? Insert a pointed object (e.g., paperclip) in the reset opening.
Remove it when the thermostat's screen becomes blank.
?? Wait one second and release the Pgm button.
http://customer.honeywell.com/techlit/pdf/69-0000s/69-1855.pdf for complet instructions
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