HVAC Troubleshooting
- Check filters and replace them, if necessary.
- Check supply and return vents for obstructions.
- Clear debris around outdoor unit.
- Make sure thermostat is in proper heating or cooling mode.
- Replace thermostat batteries.
- Make sure breakers, switches, and disconnects are in ‘ON’ position.
- Leave fan on ‘continuous’ setting while waiting for repair service.