13
PROBLEMS
POSSIBLE CAUSE
REMEDIES
1. Check power.
2. Verify power reading.
3. Check connections.
4. Check installation.
TLA NOT WORKING
1. Incorrect parameter set-up.
1. Check set-up parameters.
“E-FP” IN DISPLAY
1. Defective front panel button.
1. Press R to escape, then check all buttons for proper operation.
2. Replace unit.
“E-UP” IN DISPLAY
1. Internal problem with TLA.
1. Replace unit.
“E-E2” IN DISPLAY
1. Loss of setup parameters due to noise spike or
other EMI event.
“E-CL” IN DISPLAY
1. Loss of calibration parameters due to noise
spike or other EMI event.
1. Press R to escape, then check TLA accuracy.
a. Recalibrate TLA. (See Factory Service Module code 77.)
b. Reset parameters to factory default settings.
1. Display value exceeds display range.
2. Defective or mis-calibrated cold junction circuit.
3. Loss of set-up parameters.
4. Internal malfunction.
1. Change resolution to display whole number and verify reading.
2. Perform cold junction calibration.
3. Check set-up parameters.
4. Perform Input calibration.
“OPEN” IN DISPLAY
1. Probe disconnected.
2. Broken or burned-out probe.
3. Corroded or broken terminations.
4. Excessive process temperature.
1. Connect probe.
2. Replace probe.
3. Check connections.
4. Check process parameters.
“OLOL” IN UPPER DISPLAY
“ULUL” IN UPPER DISPLAY
1. Input is below range of TLA.
2. Temperature below range of input probe.
3. Defective or incorrect transmitter or probe.
4. Excessive low temperature for probe.
5. Loss of setup parameters.
“OLOL” OR “ULUL” IN LOWER
DISPLAY
1. Signal input exceeds allowable range by 5%.
1. Check remote signal source.
1. Check input parameters.
2. Change to input sensor with a lower temperature range.
3. Replace transmitter or probe.
4. Raise temperature.
5. Perform input calibration.
The majority of problems can be traced to improper connections or incorrect
set-up parameters. Be sure all connections are clean and tight, that the correct
output board is fitted, and that the set-up parameters are correct.
For further technical assistance, contact technical support at the appropriate
company numbers listed.
“...” or “-..” IN DISPLAY
1. Check input parameters.
2. Change to input sensor with a higher
temperature range.
3. Replace transmitter or probe.
4. Reduce temperature.
5. Perform input calibration.
1. Power off.
2. Brown-out condition.
3. Loose connection or improperly wired.
4. Bezel assembly not fully seated into rear of TLA.
7.0 T
ROUbLESHOOTING
1. Press R to escape, then check all set-up parameters.
a. Check sensor input and AC line for excessive noise.
b. If fault persists, replace TLA.
1. Input exceeds range of TLA.
2. Temperature exceeds range of input probe.
3. Defective or incorrect transmitter or probe.
4. Excessive high temperature for probe.
5. Loss of setup parameters.
NO DISPLAY
