11-6 Appendix
11-7. Error codes
Code Error description
Possible cause
Suggested remedy
E1
Polarization detected on cell
Sensor surface fouled
Clean sensor
Conductivity too high
Replace sensor
E2
Temperature coefficient out of limits
Incorrect field calibration of TC
Re-adjust
(0-3.5%/ºC)
Set calculated TC
E3
Calibration out of limits
Calibrated value differs more than
Check for correct sensor
+/- 20 % of nominal value programmed
Check for correct unit (µS/cm,
in code 03.
mS/cm, k
Ω
.cm or M
Ω
.cm)
Repeat calibration
E4
Matrix compensation error
Wrong data entered in 5x5 matrix
Re-program
E5
Conductivity too high or resistivity too low
Incorrect wiring
Check wiring (3-6)
(Limits set in service code 54)
Internal leakage of sensor
Replace sensor
Defective cable
Replace cable
E6
Conductivity too low or resistivity too high
Dry sensor
Immerse sensor
(Limits set in service code 54)
Incorrect wiring
Check wiring (3-6)
Defective cable
Replace cable
E7
Temperature sensor open
Process temperature too high or too low
Check process
(Pt1000 : T > 250°C or 500°F)
Wrong sensor programmed
Check model code sensor
(Pt100/Ni100 : T > 200°C or 400°F)
Incorrect wiring
Check connections and cable
(8k55 : T < -10°C or 10°F)
(PB36 : T < -20°C or 0°F)
E8
Temperature sensor shorted
Process temperature too high or too low
Check process
(Pt1000/Pt100/Ni100 : T < -20°C or 0°F)
Wrong sensor programmed
Check model code sensor
(8k55/PB36 : T > 120°C or 250°F)
Incorrect wiring
Check connections and cable
E9
Air set impossible
Too high zero due to cable capacitance
Replace cable
E10
EEPROM write failure
Fault in electronics
Try again, if unsuccessful contact
Yokogawa
E13
USP limit exceeded
Poor water quality
Check ion exchangers
E15
Cable resistance influence to temperature
Cable resistance too high
Check cable
e/- 15°C
Corroded contacts
Clean and reterminate
Wrong sensor programmed
Reprogram
E17
Output span too small
Incorrect configuration by user
Reprogram
E18
Table values make no sense
Wrong data programmed
Reprogram
E19
Programmed values outside acceptable limits
Incorrect configuration by user
Reprogram
E20
All programmed data lost
Fault in electronics
Contact Yokogawa
Very severe interference
E21
Checksum error
Software problem
Contact Yokogawa
IM 12D7B3-E-H
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