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en | AHT Cooling Systems GmbH
Fig. 6: Displays
Display
Appliance defect-free and op-
Cooling function off (standby)
5.3.1 Switch the cooling function on and
off (standby)
Switch off the cooling function for cleaning purposes only.
Press
pears on the display.
Switch off cooling
Press
function
appears on the display.
Press
display.
Press
the internal temperature and
Switch on the cool-
the symbols
ing function
the display after a few sec-
onds.
5.3.2 Semi-automatic defrosting
Press
pears on the display.
Start semi-auto-
Press
matic defrosting
appears on the display.
Press
bols
play after a few seconds.
After semi-automatic defrosting, the appliance automat-
ically returns to normal operation.
369779_1_1019
Meaning of display
Interior temperature
erational (normal operation)
Cooling function active
Defrosting active
Cooling function active
Defrosting active
Evaporator ventilator active
Day operation (night blind
open/appliance lighting on)
Alarm
for 5 seconds.
or
until
.
appears on the
for 5 seconds.
appear on
for 5 seconds.
or
until
.
and both sym-
appear on the dis-
5.3.3 Activate temporary daytime opera-
tion - for loading
To open the night blind and switch on the appliance
lighting during night operation.
Activate temporary
daytime operation
After 60 minutes, the night blind closes automatically
and the appliance lighting switches off.
End temporary day
operation early
5.3.4 Display and acknowledge alarm
Display alarm
The error code appears on the display.
appears on the display.
Depending on the fault, an acoustic alarm is emitted
by a built-in buzzer.
For troubleshooting if alarm indicators occur, see →
Malfunctions during operation.
Error
Meaning
code
Thermostat emer-
gency operation
Control board de-
Lufteintrittsensor
Luftaustrittsensor
Verdampfersensor
Hochdrucksensor
ap-
Verdichter-Sicher-
heitskette (Hoch-
druck/Niederdruck)
Warenraumsensor
(HACCP)
or
zu niedrige Ver-
sorgungsspannung
Batterie defekt
Software Klasse B
EEPROM (Steuer-
ungsplatine defekt)
ap-
Warenraumtemper-
zu niedrige
Warenraumtemper-
Control temperature
Control temperature
Zeitüberschreitung
Abtauung
Control and display elements | 5
Press
for 2 seconds.
appears on the display.
Press
for 2 seconds.
Meaning (EN)
On fail-safe
HW failure or Modbus
fective
flashing
Air in sensor
Air out sensor
Fin sensor
Discharge pressure
sensor
Compressor safety
(high pressure/low
pressure)
Cabinet temperature
sensor (HACCP)
Low supply voltage
Battery defective
Class B software
EEPROM (controller
defective)
zu hohe
High cabinet tempera-
atur
Low cabinet tempera-
atur
Low control tempera-
too low
High control tempera
too high
Defrost terminated by
ture
ture
ture
ture
time
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