4 | Operating and display elements
AHT Cooling Systems GmbH | en-US
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370607_2_0718
Setpoint setting
Display adjusted setpoint (temperature):
Press
.
Exit setpoint display:
Press
again or wait 15 s.
Change setpoint:
Press
for at least 3 s.
The setpoint is shown at the display and the
symbol „°C/°F“ flashes.
Increase the setpoint:
Press
.
Reduce the setpoint:
Press
.
Accept new entry:
Press
or
wait 15 s.
Semi-automatic defrost
Start semi-automatic defrost:
Press
for at least 2 s.
The symbol
is shown at the display.
After semi-automatic defrost, the device automatically returns to normal operation.
Display and acknowledge alarms
Display alarms:
The
error code
is flashing at the display alternatingly with the current temperature.
The symbol
is shown at the display.
Optionally it is possible to issue an
acoustic alarm
by a built-in buzzer.
Error code
Meaning (Controller with standard compressor))
P1
Controller sensor defective or missing
P2
Evaporator sensor defective or missing
HA
High temperature alarm, inside temperature
LA
Low temperature alarm, inside temperature
noL
Parameter adjustment necessary
Acknowledge alarms:
Acknowledge acoustic alarm (optional):
Press any button briefly.
Error code
can NOT be acknowledged.
The error code is displayed- alternately with the temperature - until the fault has been rectified.
4.2.2 Night blind operation
Night blind handle
Fixation
Fig. 2:
Night blind operation
Closing the night blind
:
– Pull the handle of the night blind down to the fixation.
– Hang the handle into the fixation on both sides and press back until you reach the stop.
– The unit lighting switches off automatically.
Opening the night blind
:
– Hang out the handle (pull out of the fixation).
