YSI 30 - Manual (Page 32)

Troubleshooting Section 9
YSI, Incorporated Model 30/30M 28
SYMPTOM POSSIBLE CAUSE ACTION
10. Main Display reads “LErr” A. In specific conductance mode,
temperature exceeds the values
computed using user defined
temperature coefficient and/or
reference temperature
B. During calibration, temperature
exceeds the values computed using
user defined temperature
coefficient and/or reference
temperature
A. & B. Adjust user defined
temperature coefficient and/or
reference temperature (See section
6 Advanced Setup)
11. Main Display reads “Err”
Secondary Display reads “ra”
A. System has failed its RAM test check
procedure
A. Turn instrument OFF and back ON.
B. Return the system for service.
12. Main Display reads “Err”
Secondary Display reads “ro”
A. System has failed its ROM test check
procedure
A. Turn instrument OFF and back ON.
B. Return the system for service.
13. Secondary Display reads “ovr” A. Temperature is > 95 o C A. Read solution of lower temperature
B. Return system for service
C. Replace Probe/Cable assy.
14. Secondary Display reads “udr” A. Temperature is < -5 o C A. Read solution of higher temperature
B. Return system for service
C. Replace Probe/Cable assy.
15. Secondary Display reads “rEr” A. Temperature jumper is set to
o
F and
reading is >199.9 o F but < 203 o F
A. Set jumper to read
o
C.
B. Return system for service
The Model 30M has additional error codes as follows:
SYMPTOM POSSIBLE CAUSE ACTION
1. Readings on main display don’t
change A. Meter is in recall mode. A. Press MODE key to return to
Normal Operation
2. Main Display reads “nOnE” A. During recall, no data is currently
stored in memory.
A. Store data before attempting to recall