Honeywell Ct2700a1019 Won't Reach Temperature Setting. Does It Need Replaced?

2 Remove the thermostat's cover. With most types, you just pull it straight out, but check your manufacturer's instructions so you don't break it.

3 Use a soft brush or vacuum with a brush attachment to gently and carefully remove dust and dirt. If the thermostat has two parallel metal strips, wipe them off with a soft cloth.

4 Look for corrosion. You can try to remove corrosion with electronic contact cleaner. If it's an outdated thermostat, consider replacing it with a newer model.

5If you have a mechanical (not electronic/ programmable) thermostat, be sure it is mounted level on the wall. Check it with a small torpedo level.

6 A thermostat should be mounted about 5 feet from the floor, located where it can easily sense an air sample that is consistent with room temperatures. This means it should not be put in a corner, behind a door, in a closet, near a window or door, or near a heat source. If it is mounted in one of these spots, consider relocating it. This involves rerouting wires so unless you're handy with this sort of thing it's probably better to hire an electrical contractor or heating technician to do the work.

7 If none of these steps works, replace the thermostat with a new programmable thermostat.

Please follow this link for reference:

https://www.hometips.com/repair-fix/thermostat-temperature-wrong.html

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