AHT Cooling Systems GmbH | en
Press
Start semi-automatic
defrosting
the display with the symbol
Defrost time
– Up to 60 min
24-hour defrost block
If
appears briefly and then the interior temperat-
ure on the display, the 24-hour defrost block is active.
End of semi-automatic defrosting
After semi-automatic defrosting, the appliance auto-
matically returns to normal operation.
The current interior temperature appears on the dis-
play.
5.5.5
Enhanced key lock
Press
Deactivate key lock
ultaneously for 5 seconds
(Level 1 access)
Level 1 is activated.
Press
Deactivate key lock
taneously for 5 seconds.
(Level 2 access)
Level 2 is activated.
The keys are now accessible for the following func-
tions:
– Assign bus address
Optional
– Switch door heating on and off
5.5.6
Bus address
a) Before assigning the bus addresses, the appli-
ances (1, 2, ...n) must be networked with an ap-
propriate bus cable.
b) The first appliance (1) must be connected to mar-
ket monitoring (M) via the bus cabling.
c) The bus cabling must be terminated with a termin-
ating resistor (R) on the last appliance (n).
Fig. 13: Bus system diagram
Technical data
Bus system (Op-
CAN bus system
tional)
Data connection to the Wurm system only possible via
Wurm-CAN communication bus (C-BUS) and FRI-
GODATA XP.
376840_1_0920
for at least 3 seconds.
and then
appear on
and
sim-
appears on the display.
and
simul-
.
1
Fig. 14: RJ12 bus cable plug (1), RJ12 sockets (2), terminat-
ing resistor (R) (3)
Pin
1 + 6 (outer wires)
2 and 5
3 + 4 (inner wires)
The controllers are supplied with bus address
standard (corresponds to a stand-alone appliance).
d) Assignment of the bus addresses must begin with
as identification for multiple appliances in the
bus system.
Bus address must not be assigned twice.
We therefore recommend that you enter the ad-
dresses according to the actual wiring sequence.
A maximum of 48 addresses are possible.
Assign bus address
Deactivate key lock
(Level 1 access)
Deactivate key lock
(Level 2 access)
– Run access up to level 2. The display shows
ADRESSE and the current bus address e.g.
1.
.
– Assign higher bus address:
press briefly .
2.
– Assign lower bus address:
press briefly .
– Use new entry:
Wait 10 seconds.
3.
The interior temperature appears on the dis-
play again.
Assign bus addresses for further appliances:
e) Repeat points 1 to 3 on each appliance and select
an available bus address.
5.5.7
Door heating
Optional
Control and display elements | 5
3
2
Data
B – Low or CAN_L
GND
A – High or CAN_H
Press
and
ultaneously for 5 seconds
appears on the display.
Level 1 is activated.
Press
and
simul-
taneously for 5 seconds.
Level 2 is activated.
as
sim-
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