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en | AHT Cooling Systems GmbH
– Switch the cooling function on and off
– Select application
– Semi-automatic defrost
– Assign bus address
– Switching the internal light on and off
– Display and acknowledge alarm
The key lock is reactivated automatically 30 s after the last actuation.
"Loc" briefly appears on the display.
The key lock is activated again.
2.1.1 Switch the cooling function on and off
Switch off the cooling function for cleaning purposes only.
Deactivate key lock (access level 1):
Switch off cooling function (start
manual defrost):
Switch on cooling function:
2.1.2 Select application
The following applications (customer-specific release) can be selected:
– A1, A2, A3, A4
Deactivate key lock (access level 1):
Show set application:
If no change is desired, the display returns to the current temperature after a brief period.
Change application:
Confirm new entry:
2.1.3 Semi-automatic defrost
Deactivate key lock (access level 1):
Start semi-automatic defrost:
Defrosting period: up to 99 minutes (device-specific)
24-hour defrost block:
If the current temperature is shown on the display, the 24-hour defrost block is active.
After semi-automatic defrost, the unit automatically returns to normal operation.
The current temperature is shown on the display again.
2.1.4 Assign bus address
Before assigning the bus addresses, the units must be equipped with a suitable bus cable. The last
unit must be provided with a terminating resistor.
The controller are delivered with the bus address „1" (corresponds to a „stand-alone"- unit). For
identification of several units in the bus system, the bus addresses must be assigned starting with
„1".
397482_2_1018
Press
and
5 s. "unL" appears on the display. Level 1 is activated.
Press
for at least 1 s.
The display shows "---".
Press
for at least 1 s.
The current temperature is shown on the display.
Press
and
5 s. "unL" appears on the display. Level 1 is activated.
Press
for at least 1 s.
The the currently set application, e.g. "A1" is shown on the
display.
Press
briefly.
The newly set application is adopted automatically after 5
s.
Press
and
5 s. "unL" appears on the display. Level 1 is activated.
Press
briefly. The symbol
The key lock is reactivated automatically 30 s after the last
actuation.
„Loc" appears on the display.
Then „dEF" and the symbol
Electronic controller AHT-NIDEC | 2
at the same time and hold for
at the same time and hold for
at the same time and hold for
appears.
are shown on the display.
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