MP5A Operation and Maintenance Manual
________________________________________________________________________________________________________________
Copyright
©
2023
‐
2024
Halogen
Systems,
Inc.
All
rights
reserved
worldwide.
Rev.:
4.02
24
13
Zero
calibration
out
of
range
Zero
calibration
out
of
range.
Reset
zero
calibration
to
zero.
8.3.
Level Three Alarm Codes Outside Measurement Range
These
errors
will
cause
the
Display
to
flash
the
backlight
and
the
4
‐
20
mA
output
to
go
negative
(<4
mA
output).
These
conditions
are
outside
of
the
Sensor’s
operating
parameters
indicating
the
displayed
results
may
not
be
accurate.
Outside
Measurement
Range
Alarms
(Firmware
699
and
higher
Display
227
and
higher)
These
problems
will
still
allow
operation
of
the
Sensor
and
will
be
cleared
when
the
condition
is
removed
or
corrected.
Error
Code
Meaning
Cause
Corrective
Action
36
Chlorine
level
exceeds
measuring
range
>30
ppm
Process
chlorine
level
to
high
‐
may
be
inaccurate.
Check
process.
Replace
sensor
if
TRO
level
is
not
accurate.
37
pH
low
<5
Verify
pH
with
handheld
meter.
If
sensor
is
not
accurate,
replace
the
pH
sensor.
38
pH
high
>10
Verify
pH
with
handheld
meter.
If
sensor
is
not
accurate,
replace
the
pH
sensor.
39
Conductivity
high
>65,000
µS
Check
sensor
operation.
Verify
conductivity
level
and
replace
sensor
with
exchange
unit
if
necessary.
40
Temperature
high
>42°C
Check
accuracy
of
measurement.
If
temperature
is
accurate,
reduce
process
temperature.
8.4.
pH Related Error Codes
16
Bad
offset
pH
Zero
not
in
manufacturer
during
calibration
This
will
only
appear
after
unsuccessful
calibration
and
will
continue
to
operate.
Replace
pH
sensor.
17
Bad
pH
slope
pH
slope
not
in
manufacturer
specified
range
during
This
will
only
appear
after
unsuccessful
calibration
and
will
continue
to
operate.
Replace
pH
sensor.
8.5.
Level Two Problem Codes
These
types
of
faults,
detected
by
the
system,
stop
the
cycle
pending
removal
or
correction
of
the
condition.
These
errors
will
generate
an
alarm
condition
that
will
cause
the
Display
to
flash
the
backlight
and
the
4
‐
20
mA
output
to
go
negative
(<4
mA
output).