Room temperature overshoots the setpoint by several degrees before the heating turns off.

Safety first: No electrical work is usually required.

Steps:

• Check location: Ensure the wall thermostat is on an interior wall away from radiators, windows, and direct sunlight.
• Adjust control settings: In the Ally app or installer menu, select the correct heating type (radiator vs. underfloor) and adjust cycle time or proportional band if available.
• Use external sensor: For underfloor heating, consider using a Danfoss floor sensor or remote room sensor to improve accuracy.
• Allow learning time: Some Ally thermostats use adaptive algorithms that need several days to optimize. If overshoot persists beyond a week, review installation and sensor placement.