Royal Clima Short Cycling / Incorrect Thermostat Sensing

The indoor unit frequently turns on and off (short cycling) without reaching the set temperature.

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Possible Causes

Room temperature sensor located too close to the cold air outlet, dirty filters causing uneven airflow, an oversized Royal Clima unit for the room size, or a faulty room temperature sensor.

How to Fix / Troubleshooting

Safety first: Turn off the power before accessing sensors.

  • Step 1 – Clean filters: Ensure proper airflow to avoid cold air recirculating directly onto the sensor.
  • Step 2 – Check sensor position: Make sure the room sensor is in the air intake area, not hanging in the cold air stream.
  • Step 3 – Adjust setpoint: Set a moderate temperature (24–25°C) and avoid frequent manual changes.

When to call a technician: Persistent short cycling may require sensor replacement or control board calibration.

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Repair Difficulty

Easy 2/5

Required Part

Indoor Room Temperature Sensor (T2)
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