Recently installed thermostat which was working fine. Now when I switch thermostat on it displays 18 deg and when I try to increase temp to say 22 deg when I press up button it flashes 35 deg and then just shows 18 again., Same thing happens when I press down arrow. It won t allow me to change temp for some reason Any suggestions?
Help with Honeywell DT90E
- Thread starter gerryd
- Start date
Sounds like it may be faulty. I would give Honeywell customer services a bell.
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