28
limits 1000 < mA <
2500
● ●
Blockage in system
plumbing
Bypass system (plumbing)
by close-looping pump
heads (in-out), turn on
pump and confirm system
current draw
● ● ● ● ●
Leak in plumbing
Find leak, fix
●
Seized pump head
(debris)
close-loop pump heads
and confirm operation
Module life counter on
board runs out (>720
days)
●
Module life has been
exceeded
Change module
program gets lost,
hits a trap
●
Programming errors
watchdog timer resets
system
Internal pre-filtration
counter runs out
●
-
Change pre-filter, reset
counter values (See
commands)
In process mode, after
20 seconds if there is
no module current
●
Electrode not connected
Verify connection between
stack and power supply
●
●
Power supply saturated
Disconnect module leads,
manually turn on power.
Voltage should be read. If
there is no voltage, restart
system and repeat test.
●
Polarity failed to switch
Re-connection or replace
new PCBA
●
Pump failed, module
current will plummet to 0
as dilute compartment is
fully de-ionized
Verify pump operation*
In process mode,
when the cut is below
the control level
(statics)
●
Pump failed, cut will
plummet to 0 as dilute
compartment is fully de-
ionized
Verify pump operation*
●
●
Module is badly scaled
check pressure drop <20
psi per side, if scaled,
replace module or wash
with REM
● ●
MPV failed to switch D
and C loops
Verify MPV and Stager
operation*
● ●
Conductivity sensor
calibration is off
Verify conductivity reading
at Mod-In and Mod-Out*
Failure reported by
conductivity circuit
OR sensor is reading
0uS or >1500uS
● ●
No Conductivity Read
Verify that the sensor is
plugged in, verify there is
water in the line, no air
bubbles
●
PCB failed to start
PCB boot issue…, replace
PCBA
●
>1500uS
Verify reading with external
tool, this can also happen
when the process is
stopped in the middle of a
cycle and the valves
switch, placing the
concentrate loop into the
dilute loop, which is greater
than 1500uS
