How to solve the problem for S&A chiller alarm, red light on and display 8.88

If the chiller alarm sounds, red light is on and the temperature controller display water temperature in normal or no display or display 8.88, you can judge it is water flow alarm.

When the red light on and the controller display water temp in normal, you can connect the water inlet with outlet by a hose, if the alarm is eliminated, that means the internal water circulating loop work in normal and the outside pipe blocked; If the chiller continue to alarm, that means internal water loop blocked.

When the red light on, the temperature no display or show 8.88, firstly we should cutt off the power line of water pump and check if the temperature controller display water temp in normal, we can judge the water pump failure, pls change it; Howerever if the temperature controller can`t display water temp or show 8.88, we can judge the power of water pump failure, and we should change another one.
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