TSI Incorporated IAQ-CALC 7515, Operation And Service Manual

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9
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended solutions
for common problems encountered with the Model 7515. If your symptom is
not listed, or if none of the solutions solves your problem, please contact
TSI.
Table 5-1: Troubleshooting the Model 7515
Symptom Possible Causes Corrective Action
No Display Unit not turned on Switch unit on.
Low or dead batteries Replace batteries.
Dirty battery contacts Clean the battery
contacts.
High CO
2
levels Breathing on probe Shield probe from breath
and allow instrument to
re-stabilize.
Instrument Error
message appears Fault in instrument Factory service required
on instrument.
WARNING
!
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in
Appendix A, Specifications .