CANNON Instrument Company | Bath Operation
If any component of the self-test fails, a FAILED message will appear on the LCD, accompanied by an
audible warning tone as shown in Figure 20.
Figure 20: Self-Test Fail Warning Screen
The ENTER key will flash in a repeating pattern and the heating LED will not light (see section Warm
Start). In the event of a FAILED test, turn off the CT-2000 power for at least five seconds and then
restart the unit.
It may be possible to resume normal operation of the CT-2000 following a failed self-test by pressing
the ENTER key. If ENTER is pressed, the “Attempting Normal Operation” LCD message appears as
shown in Figure 21.
Figure 21: Press Enter to Attempt Normal Operation
Caution: A failed self-test may result in flawed operation and damage to the CT-
2000. If the CT-2000 repeatedly fails the self-test sequene, call CANNON to
arrange for a service call for the unit.
Following the self-test, the CT-2000 proceeds with its normal display condition provided that the
RTD temperature sensor is connected properly. If the RTD sensor is unplugged at any time, the LCD
displays a warning that it is necessary to reconnect the RTD before proceeding with normal bath
operations. Refer to Figure 22.
Figure 22: RTD Sensor Warning
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