Unit frequently turns on and off (short cycling) without reaching set temperature.

Safety first: No internal electrical work is required for basic checks.

• Step 1 – Clean filters and coils: Ensure good airflow to reduce rapid temperature swings at the sensor.
• Step 2 – Check sensor location: Make sure the indoor unit is not directly above a heat source or in a strong draft that could mislead the sensor.
• Step 3 – Disable timers: Turn off any ON/OFF timers or energy‑saving modes that may be cycling the unit.
• Step 4 – Adjust setpoint and fan speed: Use a moderate set temperature and continuous fan operation to stabilize room conditions.
• Step 5 – Technician evaluation: If short cycling persists, a technician should check refrigerant charge, sensor calibration, and confirm correct unit sizing.