Honeywell Heating & Cooling - Page 6 - Recent Questions, Troubleshooting & Support
HONEYWELL RTH230B Display is Blank. This
I had blank screen also. I placed my screwdriver between the battery terminal and battery tab and voila the screen turned on. I removed the batteries, pulled the tab out, replaced the batteries, and the thermostat is working like a champ again.
6/6/2020 4:52:06 PM •
Honeywell...
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Answered
on Jun 06, 2020
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