Honeywell th1100d1001 thermostat keeps flashing low battery light stops working. Changed batteries multiple time. Works for a day or so. Cools fine but not sure if more serious issue.Single female
Keeps flashing low battery and batteries new. Light goes out so can't see thermostat setting. Worried could be bigger issue.
Heating & Cooling - Honeywell - TH1100D1001 PRO 1000 Non-Programmable Thermostat
Answers & Comments
Make sure you're not using expired batteries even if they weren't opened, not using rechargeable batteries, and using the recommended voltage batteries.
Thermostats aren't expensive. You can get them an any home improvement store or even on line.