Hach-Lange SI794 P User Manual - Manual (Page 87)

87
A
lar
m
con
tac
t
Red
LED
O
ut
1
(22
mA
)
O
ut
2
(22
mA
)
Error messages (error codes)
pH electrode
• Electrode defective
• Too little electrolyte in electrode
• Electrode not connected
• Break in electrode cable
• Incorrect electrode connected
• Measured pH value < -2 or > 16
• Measured ORP value
< -1999 mV or > 1999 mV
Error Display
Problem
Possible causes
ERR 01 Measured
value
blinks
x x x
Redox electrode
• Electrode defective
• Electrode not connected
• Break in electrode cable
• Incorrect electrode connected
• Electrode potential < -1500 mV
• Electrode potential > 1500 mV
ERR 02 Measured
value
blinks
x x x
System error
Configuration or calibration data
defective; completely reconfigure
and recalibrate the transmitter.
Memory error in device program
ERR 98 “Conf”
blinks
x x x x
Factory settings
EEPROM or RAM defective
This error message only occurs in
the case of a total defect.
The transmitter must be repaired
and recalibrated at the factory.
ERR 99 “FAIL”
blinks
x x x x