Function Param. Min. Max.
Fac.
setting
Manual control of the valve’s opening degree.
The function can only be operated if ”o18” has
been set
o45 0 % 100 % 0
Selection of loop ctrl:
1=Normal
2=double loop
o56 1 2 1
Service
Read status of input DI u10 on/off
Temperature at S2 sensor u20 °C
Superheat u21 K
Superheat reference u22 K
Read AKV valve’s opening degree u24 %
Read evaporating pressure u25 bar
Read evaporating temperature u26 °C
Temperature at S4 sensor u27 °C
Read signal at pressure transmitter input u29 mA
*) This setting will only be possible if a data communication module has been
installed in the controller.
The controller can give the following messages
E1
Error message
Fault in controller
E15 Cut-out S2 sensor
E16 Shortcircuited S2 sensor
E17 Cut-out S4 sensor
E18 Shortcircuited S4 sensor
E20
The input signal on terminals 14-15 is outside the range
(P0 signal)
A11
Alarm message
No refrigerant has been selected
A43 Check the supply voltage to the step motor
Operating status (Measurement)
The controller goes through some regulating
situations where it is just waiting for the next
point of the regulation. To make these "why
is nothing happening" situations visible, you
can see an operating status on the display.
Push briey (1 s) the upper button. If there is
a status code, it will be shown on the display.
The individual status codes have the following
meanings.
Ctrl. state:
(Shown in all menu
displays)
Normal regulation S0 0
Refrigeration stopped by main switch.
Either with r12 or a DI-input
S10 10
No refrigerant selected S26 26
Factory setting
If you need to return to the factory-set values, it can be done in this way:
- Cut out the supply voltage to the controller
- Keep both buttons depressed at the same time as you recon nect the
supply voltage
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