Relay on the circuit board is stuck
Contact supplier.
Acid pump only doses occasionally
Sour pump is set to proportional
dosing
No action required
Chlorine pump does not dose
Switch under the dosing pump is
set to "O".
Set switch to "1
Settings of Rx control are incorrect
Verify settings
A level detector is connected that
gives a wrong contact
Disconnect level detector
A flow sensor is connected and
indicates that there is no flow.
Verify flow and flow switch (go to
setting flow switch : no)
Chlorine pump continues dosing
Setpoint not yet reached
Verify settings and verify chlorine
content with color method.
Relay on the circuit board is stuck
Contact supplier.
Acid pump and chlorine pump do
not pump.
A flow switch is connected and it
shows that there is no flow
Verify flow and flow switch (go to
setting flow switch : no)
There are level detectors
connected that give a wrong
contact
Disconnect level detectors
Chlorine or acid pump do not draw
in liquid
Vessel is empty or suction base is
above liquid level
Replace acid or chlorine container;
Lower suction base.
Suction base is blocked
Replace suction base ZWMX2205-Z
Peristaltic hose is leaking
Replace peristaltic hose
ZWMX2231-Z
Injection nozzle is blocked
Replace injection nozzle
ZWMX2220-Z
Liquid (acid or chlorine) in dosing
compartment of chlorine or acid
pump
Santoprene dosing hose leaking
Verify if dosing nipple is clogged,
and replace dosing hose.
Dose hose in pH or chlorine dosing
chamber forms a bladder
Acid or chlorine supply in injection
nipple blocked by dirt /
calcification
Stop acid dosing immediately and
clean/replace nipple. Use liquid
chlorine with anti-scaling
Calibration failed
Calibration fluid outdated or dirty
Replace calibration fluid
Probe not yet balanced
Repeat calibration
Probe broken
Replace probe
Probe dry for a long time
Leave probe in pool water for 24
hours, and recalibrate
