What Are Common Thermostat Problems That Cause It Not To Work?

Common thermostat issues usually come down to settings, power, or a control fault. Our technicians troubleshoot thermostats and related electrical/controls as part of HVAC service, including “won’t turn on” symptoms. If simple checks don’t restore operation, we can diagnose and repair the control or advise on replacement.

Quick checks:

• Confirm Heat/Cool mode and setpoint.
• Verify system power and breaker.
• Replace thermostat batteries (if applicable).
• Check schedule/hold settings.

Updated: 2025-12-21

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