Intro

A thermostat controls when your AC turns on and off.

What This Problem Means

If the thermostat fails, the system may not respond.

Common Causes

• Dead batteries

• Loose wiring

• Old thermostat

• Incorrect settings

Safe Things a Homeowner Can Check

• Replace batteries

• Make sure thermostat is set to cool

When to Call a Professional

Wiring repairs should not be handled by homeowners.