21
Symptom
Probable Cause
Suggested Action
Makeup tank overflow (High Alarm)
Water Saver not receiving stop signal
Confirm EWLC wiring
Confirm EWS is in Auto Mode
User supplied device malfunction
Check function of device
Bypass line continuously engaged
Water Saver not operating
Confirm EWS is in Auto Mode
No or reduced inlet flow
Check makeup flow supply and
pressure
Plugged pressure regulator valve
Clean pressure regulator valve
Plugged water meter strainer
Clean water meter strainer
Booster pump flow rate to evaporative
coolers greater than EWS output
Check/confirm booster pump flow rate
setting
“Clean” conductivity value close
to makeup conductivity value
Conductivity probe(s) out of
calibration
Calibrate probe(s)
Conductivity probe(s) fouled
Clean probe(s)
EWS power supply off
Reset power supply. Turn off main
power for 1 minute then restart (refer
to Turning Off Power to EWS)
Cylinder fouling
CIP Required. Contact Factory
Authorized Service Provider
Dark display screen
Screen display in “sleep” mode; EWS
continues to operate
Tap screen
No supply power to EWS
Check supply voltage
Check that panel disconnect is ON.
Check fuses inside EWS panel;
replace with same type/rating
Clean fan filter and reset power
Water meter values do not change
Plugged strainer
Backwash meter
Water leak at EWS components
Component water leak
Contact Factory Authorized
Service Personnel
Troubleshooting
