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Question About Pro-Tech Thermostat 520
Thermostat...

Just replaced batteries. Now whole display flashes continually, even when neither heat nor air is on. What's this? Never did it before!

Asked by Lia Fabro on 09/13/2012 0  Answer

ManualsOnline posted an answer 11 years, 8 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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