MP5A Operation and Maintenance Manual
________________________________________________________________________________________________________________
Copyright
©
2023
‐
2024
Halogen
Systems,
Inc.
All
rights
reserved
worldwide.
Rev.:
4.02
23
8.
Section 6 Troubleshooting
8.1.
Troubleshooting
This
indicates
that
the
display
is
not
communicating
with
the
Wired
sensor
module.
If
an
M12
connector
is
present
(CN
‐
01
and
CN04),
then
this
is
likely
caused
by
a
sensor
problem
and
your
sensor
may
require
replacement.
These
steps
apply
to
a
Wired
sensor
(wires
connected
directly
into
the
terminal
block).
1.
Check
the
connection
and
wiring
to
the
Sensor
Module
for
loose
or
swapped
connections.
2.
After
correcting
the
problem,
turn
the
display
off
and
back
on.
3.
Check
the
sensor
to
see
if
the
motor
is
working.
a.
If
not,
power
and
ground
lines
may
be
wired
backwards.
Check
and
correct.
4.
There
could
be
a
short
in
the
wiring
to
the
sensor.
5.
Check
all
four
wires
resistance
to
ground
(sensor
housing)
with
an
Ohm
Meter.
a.
There
could
be
an
internal
short
from
the
wires
to
the
sensor
from
the
time
the
valve
adapter
was
added.
Resistance
should
be
open
(infinite
resistance).
i.
If
the
motor
is
working,
the
com
lines
may
be
reversed.
Check
and
correct.
6.
If
the
sensor
still
does
not
communicate,
then
replace
it
with
a
new
sensor.
Figure
20:
Screen
indicates
no
communication
with
sensor
‐
no
sensor
address
found.
8.2.
Level One Problem Codes and Alarms
If
an
error
occurs
with
the
sensor,
it
will
be
displayed
in
the
lower
right
corner
of
the
Main
Screen
(
Figure
).
Figure
9:
Error
displayed
on
Main
Screen
Level
One
Fault
Codes
(Firmware
1054
and
higher)
These
problems
will
still
allow
operation
of
the
measurement
module
and
will
be
cleared
when
the
condition
is
removed
or
corrected.
Error
Code
Meaning
Cause
Corrective
Action
1
Air
in
Sensor
10
cycles
Same
as
31
but
for
10
cycles
Power
on
and
off
several
times.
Make
sure
sensor
is
immersed
in
water.
Check
installation
to
ensure
outlet
port
is
vertical
or
perpendicular
to
flow.
(ballast
pipe)
Check
orientation:
should
be
mounted
90°
to
270°.
Remove
sensor
from
deionized
water.
31
Air
in
Sensor
Air
in
sensor.
The
sensor
will
enter
a
priming
function
and
try
to
remove
the
air.
Error
will
clear
automatically
when
condition
is
corrected.
Sensor
ran
in
deionized
water.
35
Motor
RPM
very
Low
Debris
in
sensor
or
worn
impeller
bearings.
Check
for
debris
in
sensor
cover.
Replace
bearings,
if
worn.
See
Section
7
of
manual
for
sensor
disassembly.
Replace
impeller
and
bearings
if
worn
or
corroded.
‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐
E r r o r
:
S e n s o r
N o t
F o u n d
‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐
C H L
4 .
9 7
p H
7 .
4 0
O R P
8 0 3
C N D
5 1 5
T e m p
1 8
E R R 1 5
Main
Screen