Since morning, my chiller is showing faulty temperature, it switches on for 10mints and switches off for 10mints... what can be done? the water temp came from 27C to 25.5C and it still does the same...... anyone here knows what can be done? i cant afford to buy a new chiller now, my plan is to attach a timer and unplug the thermostat or attach an external thermostat... or has anyone come across this problem using hailea and fixed it themselves? please help urgent... can anyone show with pics? 1 more thing, the black cylinder inside becomes very very hot.. is that normal?