Equipment
- Honeywell wall thermostat (Heat / Off / Cool) on a home heating system
Honeywell thermostat replacement in Fremont
Problem: The Honeywell thermostat in this Fremont home had stopped working, and the customer said it was very cold. Its screen was blank. They had already put in new batteries three times. It still wouldn’t turn on.
Diagnostics: Three sets of fresh batteries had ruled out the easy answer. When a thermostat stays dark with good batteries, the problem is usually the thermostat itself or the wires that feed it. So the fix covered both.
Solution: We took the old thermostat off the wall, redid the wiring and mounted a new Honeywell Home thermostat in the same spot.
Result: The new thermostat came on, and the screen showed Heat On. If your thermostat stays blank after a battery change, check that the batteries sit the right way round. If it’s still dark, stop buying batteries. The thermostat or its wiring is the next thing to look at. We replace thermostats in Fremont and across the East Bay.
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