Errors, alarms and warnings – Hanna Instruments PCA 310 User Manual
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ERRORS, ALARMS AND WARNINGS
The possible error, alarm and warning messages are described
below with a short suggestion about the needed action to
remove the error.
The pH and temperature related messages are present only on
PCA 320 and PCA 330 and the ORP related messages are
present only on PCA 330.
The warning messages appears on LCD and some of them on
SMS. The measuring is not stopped on warnings.
Alarm conditions generate messages on the LCD, send SMS
(if enabled), activate the alarm relay and the ALARM LED.
Error conditions generate messages on the LCD, send SMS (if
enabled), activate the system error relay, the SYSTEM ERROR
LED and block the dosing.
ERROR MESSAGES
“No Reagent
No Reagent
No Reagent
No Reagent
No Reagent” on LCD and “No Reag.
No Reag.
No Reag.
No Reag.
No Reag.” on SMS
The reagent counter reached 0.
At each measurement the reagent counter is decreased
with one unit.
Change the reagent bottle and reset the reagent counter.
The reagent counter is reset also when the “prime reagent
pump” command is executed.
“Hardware Error
Hardware Error
Hardware Error
Hardware Error
Hardware Error” on LCD and “Hw Err
Hw Err
Hw Err
Hw Err
Hw Err” on SMS
Error on the hardware. The writing in EEPROM failed or
the analog to digital converter not working;
Call Hanna service.
“Detector Error
Detector Error
Detector Error
Detector Error
Detector Error” on LCD and “Det Err
Det Err
Det Err
Det Err
Det Err” on SMS
This error appear in the following situation:
The light do not reach the detector. The light source is
broken or the cell inner wall is dirty.
The light that reach the detector with lamp off is too high.
The light source circuit or the detector circuit is broken.
The difference between the detector response with light on
and light off is too small. The cell is dirty, the water is too
turbid or the detector circuit is defective.
The chlorine reading is below “Low point”. This could be
caused by absence of chlorine in water, low pressure in
the water inlet, malfunction of the sample valve, missing
of the stirrer bar, missing reagent, detector malfunction.