Troubleshooting - ProMinent DULCOTEST CDR 1 series Betriebsanleitung

13.5

Troubleshooting

Left LED (sensor LED)
Colou Flash code
r
red lit
red flashing*
red flashing slowly**
red Double
flashing***
green lit
- off
Fig. 7: Blink code explanation Ä 'Left LED (sensor LED)' on page 75
DULCOTEST
Cause
Electronics fault
Start phase
Calibration is faulty
0 ppm > measured
value > 10 ppm
Measured value <>
Limit value
No pH correction
value transferred
No device error
pending
No supply voltage
sensor with CAN connector
®
Consequence
Sensor faulty
no transmission of
measured value
Measured value is
incorrect
Measured value too
high/too low
Limit value trans‐
gression
pH correction value
missing
Normal mode
sensor
Sensor not func‐
tioning
Remedy
Return the sensor or
contact customer
service
wait briefly
Re-calibrate
Use DPD to check the
concentration in the
sample water
Clarify cause; possibly
set new values
Check parameters and
configuration. Check
pH sensor
-
Check cable connec‐
tions
A2658
75