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Chapter 9
ELECTRONIC CONTROL UNIT
USE AND FUNCTIONING
Adjustment keys
The regulator is controlled by 3 buttons placed under
the display. Key 1 is used to scroll (forward) in the display
menu or to increase setting values.
Key 2 corresponds to the contrary function.
To set values press key 1 for 2 seconds. If
a value to be set appears on the display, SET
is displayed. In this case it is possible to pass to the operation
mode by pressing key 3.
Set the channel using keys 1 and 2
Press key 3 briefl y, SET will fl ash (SET mode)
Set the value using keys 1 and 2
Press key 3 briefl y, SET appears again (constant), the
value set has been memorised.
Reverse
Forward
SET
(selection/operation mode)
1
3
2
System Monitoring Display
The System Monitoring display is made up of 3 areas
the channels indicator, the list of symbols and the systems
layout indicator (systems active layout).
The channels indicator is composed of two lines. The upper
line is and alphanumerical fi eld with 16 segments. Channel
names/menu levels are mainly displayed here. The lower
line (fi led of 7 segments) displays channel values and setting
parameters.
The temperatures and temperature diff erences are displayed
by setting °C o K.
The additional symbols in the symbols list indicate the current
status of the system.
Symbol
Normal
Flashing
Relay 1 inserted
Relay 2 inserted
Tank maximum limitation
inserted/tank maximum
temperature exceeded
Collector cooling function inserted
Tank cooling function inserted
Anti-freeze protection
option
Collector minimum limitation inserted
Anti-freeze protection function inserted
Collector safety device disconnection
inserted or tank safety device
disconnection
Faulty probe
Manual functioning inserted
A setting channel is modifi ed
Mode – SET
Channels indicator
List of symbols
only channels indicator
only list of symbols
System Monitoring display complete
fi gure 9.9
fi gure 9.10
fi gure 9.11
fi gure 9.12