My experience is of a Resun chiller, not Hailea, but I guess the workings are similar. Most likely the chiller is overheating and the circuit is cutting out to prevent more serious damage. Please check if there is any indicator for overheating. In mine there is a red LED which glows once the internal temperature goes above the cutout setting. The blower fan moves to a higher speed to cope, but if it's not enough the compressor is cut out. This might happen due to build up of dust and/or rust near the fan shaft. The coolant might have lost its heat exchange capacity or the compressor might be performing below par from age. Try cleaning the air filter, which should be easily removable. That can improve things. Else contact the seller for a look-in. I am not aware if there are authorised service centres of Hailea near your location. Buroda is known to service chillers, you can contact him if needed. Hope this helps.