Johnson Controls SABROE Unisab III Control User Manual

9. Troubleshooting
9.1. Troubleshooting Unisab III controller
9.1.1 Diagnose tool
If irregularities occur in connection with compressor operation, Unisab III can be inspected to
determine the cause of these irregularities.
In case of a shutdown all operating data including status of all inputs/outputs, analogue val-
ues and time and date will be stored in the History menu. The shutdown list in the History
menu includes all data for the last 30 shutdown events. This makes it possible to inspect in-
formation on the display, which is particularly useful when searching for the cause of a com-
pressor shutdown. For a description of how to use the shutdown list in the History menu, see
chapter 4.
For troubleshooting it is also possible to check the actual status of all digital/analogue inputs
and outputs in the Unisab III Service menu, see chapter 5.
9.1.2 Light diodes
If opening the Unisab III panel, it is possible to find a number of light diodes (LED) showing
the actual status of digital inputs/outputs, communication and power supply etc. The Unisab
III includes the following LEDs:
Digital inputs (Green, 14 pcs)
Digital outputs (Red, 20 pcs)
Communication (LAN, Danbus/RS485, Profibus)
Sd card busy (Red, 1 pcs)
Processer status (Green, 1 pcs)
Processer reset (Red, 1 pcs)
Power on (Green, 1 pcs)
The position of each LED is shown in Fig. 47.
Troubleshooting
Engineering manual - Unisab III 1.10
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Johnson Controls SABROE Unisab III Control Specifications

General

Brand	Johnson Controls
Model	SABROE Unisab III Control
Category	Control Systems
Language	English