Honeywell TH5220D1003 Support Question
Find answers below for this question about Honeywell TH5220D1003 - Digital Thermostat, 2h.Need a Honeywell TH5220D1003 manual? We have 1 online manual for this item!
Current Answers
Answer #1: Posted by TommyKervz on September 15th, 2013 1:09 AM
Greetings. If replacing batteries had no impact then the thermostat must have gone bad and must need be replaced.
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