4535 611 98931 iE33 Service Manual Page 246
CSIP Level 1 Troubleshooting: Temperature Monitoring
NOTE If you suspect a temperature problem and the Fan Controller Test fails, do not replace
parts until you reboot the system, and re-run the Confidence test (the test consis-
tently passes on a rebooted system).Review the SystemMonitorLog and ErrorLog to
verify that there are no temperature errors. If the Fan Controller Test fails for this
issue, there is no thermal danger to the patient or to the system.
On PCBs that have input and output airflow sensors (Channel Boards and NAIM), if the differ-
ence between the two sensor readings is greater than 77°F (25°C), the temperatures are logged
to the SystemMonitorLog every 10 seconds.
The rate of change from the previously logged temperature is also monitored. If the last logged
value is 50, and the rate of change is set at 5, the temperature is logged in the SystemMonitorLog
when the temperature is 45°C or 55°C. The amount of time between logged values depends
only on how long it takes for the temperature to vary by the set amount. It may be two minutes,
two days, or longer.
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