Technician Mark of S&A company show you the troubleshooting of E3 alarm of S&A chiller CW-5200.
E3 means over low water temperature alarm.When alarm occurs, the error code and the temperature will be alternately displayed, the alarm sound could be suspended by pressing any button.Under low ambient temperature(e.g. in winter),when the cooling water temperature is lower than factory setting startup temperature,it is easy to cause E3 alarm.
1. Startup machine( e.g.laser) to rise cooling water temperature.E3 alarm will be automatically eliminated.
2.If the chiller works in a larger temperature difference,add warm water into the water tank until the water temp restore to normal value.E3 water temperature alarm can be eliminated.
If the chiller continues alarming, it is possible that temperature contriller or sensor is faulted.