Error Messages And Warning Alerts - ProMinent DULCOMETER Assembly And Operating Instructions Manual

[Diagnostics]
17.4

Error messages and warning alerts

Error messages
Error Error message
text
88 The connection to
the extension
module is faulty
01 The mV input
voltage is too low
02 The mV input
voltage is too high
03 The temperature
is too low
04 The temperature
is too high
148
Cause
The connection cable
has slipped out of the
socket
Connection problems
between the main and
extension unit
Coaxial cable connec‐
tion disconnected
pH/ORP sensor is faulty
The connected signal
does not come from a
pH sensor
An interference signal is
being picked up
Incorrect sensor con‐
nected
No sensor or incorrect
sensor connected
Remedy
Check the connection cable
and tighten
Return to the factory for
checking
Check that the coaxial cable
connection is fitted correctly
and re-connect
Check the coaxial cable con‐
nection for corrosion and mois‐
ture and replace with a new
cable, if necessary
Replace the sensor
Check the origin of the sensor
signal. Check the raw signal by
pressing . The sensor raw
value is shown here in mV. If
the value with pH is greater
than ± 500 mV or with ORP is
greater ± 1500 mV, then these
are wrong sensor values.
Check once again the cabling
and origin of the sensor signal.
Ensure that the measuring
lines are not laid parallel to
power cables.
Check the type of sensor con‐
nected. Only Pt 100 and Pt
1000 sensors work
Check the sensor connection
Check the type of sensor con‐
nected. Only Pt 100 and Pt
1000 sensors work