Idiomas disponibles
Idiomas disponibles
2 | Electronic controller AHT-NIDEC
Bus addresses must not be assigned twice. Afterwards, we recommend entering the addresses ac-
cording to the actual wiring sequence.
Max. 247 addresses can be entered.
Deactivate key lock (access level 1):
Access programming level
1.
– Switch off cooling function: Press
2.
– Then immediately press
"Adr" is shown on the display alternating with the current bus address, e.g. "1".
Assign bus address
3.
– Assign next higher bus address (individual step):
Press
– Fast browse through bus addresses:
Hold down
4.
– Apply new input: Wait 5 seconds.
The display shows "---".
Property damage when assigning the bus address due to switching off the cooling
function.
▪ After assigning the bus address, the cooling function has to be switched on again (see → item
5).
5.
– Switch on cooling function again. Press
The current temperature is shown on the display.
Assign bus address for subsequent units:
– Repeat steps 1 to 5 on each device and set a free bus address.
2.1.5 Switching the internal light on and off (optional)
Deactivate key lock (access level 1):
Switch on internal light:
Switch off internal light:
2.1.6 Display and acknowledge alarm
Display alarm
The error code is displayed alternately with the current temperature until the fault has been recti-
fied.
The symbol
Optionally, an acoustic alarm can be emitted by means of a built-in buzzer.
For troubleshooting measures in the event of alarm indications see →Faults in operation.
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briefly.
.
appears on the display.
Error code
F1
F2
F4
Press
and
5 s. "unL" appears on the display. Level 1 is activated.
for at least 1 s. „The display shows "---".
3 times briefly in succession.
NOTICE
for at least 1 s.
Press
and
5 s. "unL" appears on the display. Level 1 is activated.
Press
or
briefly.
The symbol
appears on the display.
Press
or
briefly.
The symbol
disappears from the display.
Sensor fault F1
Sensor fault F2
Sensor fault F4
AHT Cooling Systems GmbH | en
at the same time and hold for
at the same time and hold for
Meaning
397482_2_1018
