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

Safety first: No internal access is usually required.

Steps:

• Check mode: Use AUTO or COOL mode with a reasonable setpoint (e.g., 72–76°F) and medium fan speed.
• Clean filters: Ensure air filters are clean to stabilize airflow.
• Eliminate drafts: Avoid placing the remote thermostat (if used) or indoor unit where it is hit by direct cold air or sunlight.

If short cycling continues: A technician can check sensor readings and confirm that the indoor ambient sensor is correctly located and functioning.