Alarm.com Smart Thermostat Troubleshooting Guide

The Alarm.com Smart Thermostat is designed for reliability and comfort, but occasionally issues may occur. If your thermostat is not controlling the HVAC system properly, use the following troubleshooting guide before contacting an HVAC professional.

Common Issues

Thermostat is not turning on heat or AC
Thermostat only controls heat or AC but not both
Heat or AC runs continuously when it should not

Note: For non-Alarm.com thermostats, please contact the device manufacturer for configuration support.

Step-by-Step Troubleshooting

1. Verify Communication

Ensure that the thermostat is properly connected to your Z-Wave network. Poor communication can prevent accurate control of HVAC functions.

2. Check Wiring

Incorrect wiring is one of the most common causes of thermostat issues. Review connections carefully or see the Alarm.com Smart Thermostat Wiring & Configuration Guide.

3. Confirm Power to HVAC Components

Verify that power has been restored to all HVAC system components (furnace, compressor, fan, etc.) after installation.

4. Allow Compressor Delay

By default, the thermostat has a 5-minute compressor delay to protect the HVAC system when switching between heat and cool modes. Wait the full time before assuming the system isn’t responding.

5. Verify Configuration Settings

The thermostat must be configured correctly for the type of HVAC system in use. Common configuration errors include:

Heat pump configured as a standard system
Incorrect fuel source setting (electric vs. gas)
Improper stage support (1-stage vs. multi-stage)

To verify via the Partner Portal:

Log into the Partner Portal.
Find the customer account.
Click Equipment > Z-Wave Devices.
Locate the thermostat in the list and expand the details.
Click Device Commands > Configure Device to review and adjust settings.

6. Check for Hardware Issues

If none of the above resolves the problem, the issue may be related to a hardware failure in the thermostat or HVAC system (e.g., a bad fuse, faulty compressor, or wiring short). In this case, contact a licensed HVAC professional.

Additional Support

For more details on calibration programming and advanced troubleshooting, refer to the Alarm.com Smart Thermostat Troubleshooting Guide or consult the official installation manual.

Need professional help? Contact True Protection for service and support.