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The Engineer's Key
The engineer's key is a hidden key that is located under the Fireye logo in the top left hand corner of
the display. With the use of the engineer's key it is possible to read the values of internal system vari-
ables and external input and output states. It is also possible to see the values of fault subsets (refer to
section 9.4 for details), in order to obtain more detailed information about a fault which has
occurred.
When using the engineer's key it is not possible to change any parameters. Therefore, it is not possi-
ble to affect the operation of the burner.
Viewing engineer's key parameters
After pressing the engineer’s key:
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The display will show the number of the currently selected parameter and value.
Use the scroll keys to change the parameter number shown on the top left display.
Press the RUN key at any time to revert to the normal run display.
The unit will revert automatically to the normal run display if a key has not been pressed for one
minute.
When using the engineer’s key it is not possible to change any parameters. Therefore it is not possi-
ble to affect the operation of the burner.
ENGINEER’S KEY
