Unit turns on and off frequently (short cycling), cooling in very short bursts.

Steps:

• Check sizing: Compare the Hotpoint unit's BTU rating to the room size. An oversized unit will naturally short cycle; consider using a lower capacity unit.
• Sensor placement: Ensure the ambient thermistor is not directly in the cold air stream. If it is, reposition it slightly away from the discharge so it senses average room temperature.
• Clean filters and coils: Restricted airflow can cause rapid temperature swings near the sensor. Clean filters and coils.
• Test sensor: If cycling is extreme, test and replace the ambient thermistor if readings are unstable.

Note: Persistent short cycling with correct sizing and a good sensor may indicate a control board issue.