Meross Temperature Overshoot / Poor Control Calibration

Thermostat frequently overshoots the set temperature, making the room too warm before turning off.

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Possible Causes

Thermostat installed near heat source or in dead air zone, Incorrect cycle rate or hysteresis settings, Slow-response underfloor heating without floor sensor feedback

How to Fix / Troubleshooting

Safety: No high-voltage work required unless relocating the thermostat.

Steps:

  • Check location: Ensure the thermostat is mounted on an interior wall, away from radiators, direct sunlight, and drafts. If installed poorly, relocate according to Meross guidelines.
  • Adjust control parameters: In advanced settings, reduce hysteresis or adjust cycle rate (if available) to better match your heating type (radiators vs underfloor).
  • Enable floor sensor: For underfloor systems, use the external floor sensor and set the thermostat to Room + Floor mode to prevent floor overheating.
  • Use adaptive/learning mode: If the model supports it, enable adaptive control so the thermostat learns the system response and reduces overshoot.

Outcome: If overshoot persists despite correct placement and settings, the internal sensor or control algorithm may be faulty; consider replacing the thermostat.

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Repair Difficulty

Easy 2/5
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