Buhler 2375, 2335, 2425, 2290, 2360 manual Electronic Monitor Rotary Select Switch Failures

SECTION 2 - OPERATION

Electronic Monitor Rotary Select Switch

Failures

The Electronic Instrument Control System will notify the operator that the rotary select switch has an open circuit. The select switch will not function in any of the calibration modes or normal operation positions. Refer to “Electrical Troubleshooting” in Section 4 for possible causes of an open circuit. The following description details the reaction of the electronic monitor in the event of an open circuit on the rotary select switch:

With the ignition in the “RUN” position and an open circuit detected on the rotary select switch, the lower portion of the monitor will flash “SEL” and “OPEN.” No audible alarm will sound. Pressing the acknowledge/reset button will not clear the “SEL” “OPEN” display. The upper portion of the monitor will continue to show engine RPM. The “SEL” “OPEN” display will be activated in any position of the rotary select switch if an open circuit is detected.

Figure 2-121

2-90