Stop cooling and let the equipment thaw safely
Turn off cooling using the normal controller. Do not chip, scrape or heat the ice, and do not open fixed covers. Keep the area below the unit clear because thawing can release more water than the drain manages.
If water is approaching electrics, there is visible damage or controls cannot be used safely, isolate the system only where safe and obtain qualified help. Do not restart cooling merely because the visible ice has disappeared.
Why ice can form
Restricted airflow from dirty filters, fan problems or internal contamination can allow surfaces to become too cold. Sensor, control, refrigerant or operating-condition issues may also contribute. The visible location of ice alone does not prove the cause.
Refrigerant is not a consumable that should be routinely topped up. Suspected loss requires appropriately qualified investigation and any work must follow current F-gas requirements.
Diagnosis prevents a repeat
An engineer can assess filters and airflow, fan operation, operating temperatures, controls, drainage and the refrigeration circuit where necessary. This identifies why the coil froze rather than simply waiting for it to melt.
Top Local offers fault finding across Kent and the South East. Share photos taken from a safe distance, the model, mode, filter condition and whether cooling or airflow changed before the ice appeared.