Thermostat emits unusual buzzing or clicking noises from the wall unit itself.

Safety first: Turn off power to the indoor unit at the breaker before removing the thermostat.

Steps to troubleshoot:

• 1. Tighten mounting: Ensure the thermostat base is firmly attached to the wall and not rattling.
• 2. Check configuration: Verify correct system type and staging in the installer menu to prevent rapid on/off cycling.
• 3. Observe operation: If the noise coincides with every call for heat or cool, the internal relay may be wearing out.
• 4. Replace thermostat: Replace the Bryant smart thermostat if internal noises persist and are accompanied by erratic operation.