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5
ELECTRONIC CONTROLLER
5.1
Microprocessor Display
1
3
2
Figure 6: Microprocessor Display
There are three LED buttons which display the operating status of the controller:
Key
1
2
3
Button
Function
‘UP’ key.
Light indicates COMPRESSOR is running.
Flashing indicates manual request of Continuous Cycle is delayed
by the compressor timed routine.
INCREASES Set-Point values.
Enables compressor CONTINUOUS CYCLE when pressed for
more than 5 seconds.
‘DOWN’ key.
Light indicates DEFROSTING.
DECREASES Set-Point values.
Activates a manual DEFROST CYCLE when pressed for more
than 5 seconds.
‘SET’ key.
Light indicates an ALARM (Press to mute audible alarm).
Flashing indicates the corresponding function is delayed by a
timed routine.
DISPLAYS the Set-Point value.
During normal working conditions, the display shows the value measured by the
ambient probe or by the second probe (parameter /4). If the alarm is activated,
the relative code is displayed.
YARRA YA850i & YA1700i
Installation, Operation and Service Manual
21