Omega CN63100 Series User Manual page 80

TROUBLESHOOTING (Cont'd)
PROBLEMS
"SENS" IN DISPLAY
(CN63300)
"OLOL" IN UPPER DISPLAY
"ULUL" IN UPPER DISPLAY
"SHrt" IN DISPLAY
(CN63100)
CONTROL SLUGGISH OR NOT
STABLE
"OLOL" OR "ULUL" IN LOWER
DISPLAY
POSSIBLE CAUSE
1. Input exceeds range of controller.
2. Incorrect input wiring.
3. Defective transmitter
4. Internal malfunction.
1. Input exceeds range of controller.
2. Temperature exceeds range of input probe.
3. Excessive positive probe temperature.
4. Loss of set-up parameters.
1. Input is below range of controller.
2. Temperature below range of input probe.
3. Excessive negative probe temperature.
4. Loss of set-up parameters.
1. RTD probe shorted.
1. Incorrect PID values.
2. Improper probe location.
1. Signal input exceeds allowable range by 5%.
REMEDIES
1. Check input signal level.
2. Check input wiring.
3. Check signal calibration.
4. Check calibration.
1. Check sensor or input signal level.
2. Change to input sensor with a higher temperature range.
3. Reduce temperature.
4. Check set-up parameters.
1. Check sensor or input signal level.
2. Change to input sensor with a lower bottom range.
3. Increase temperature.
4. Check set-up parameters.
1. Check wiring.
2. Replace RTD probe.
1. See PID Control.
2. Evaluate probe location.
1. Check Remote Signal Source.
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