Amazon Smart Thermostat Auto-Changeover Configuration or Control Conflict

Thermostat randomly switches between heating and cooling modes without user input (dual-mode systems)

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Possible Causes

Auto mode enabled with tight deadband, Conflicting Alexa routines or voice commands, Incorrect system type configuration

How to Fix / Troubleshooting

Note: This is usually a configuration issue.

  • Disable Auto mode: Set the thermostat to Heat or Cool only instead of Auto to prevent automatic mode switching.
  • Increase deadband: If available, widen the temperature difference between heating and cooling setpoints.
  • Review Alexa routines: Remove or adjust routines that change modes based on time or occupancy.
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Repair Difficulty

Very Easy 1/5
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