Operation Of Night Blind/Device Lighting Function; Operating Element Night Blind/Device Lighting (Only For R-134A Devices); Day/Night Switch (Only For R-134A Devices); Transport And Storage - AHT VENTO GREEN Serie Manual De Instrucciones

AHT Cooling Systems GmbH
List of fault codes:
Fault code* Meaning
"OnF" Thermostat emergency operation
"noL" Control board defective
Fault in electronic expansion
E00
valve
E01 Fault in suction pressure sensor
Fault in suction gas temperature
E02
sensor (suction manifold sensor)
E03 Fault in air intake sensor
E04 Fault in air outlet sensor
E05 Fault in slat sensor
E06 Fault in high-pressure sensor
E07 Fault in compressor safety chain
Fault in heat gas temperature
E08
sensor (pressure tube sensor)
Fault in internal temperature
E09
sensor (Goods room)
E10 Supply voltage too low/too high
Low battery voltage (see →
E11
Chapter 10.2.3)
Fault in software class B (safety
E12
software)
Fault in EEPROM
E13
(control board defective)
Suction pressure too low
E32
Superheating too low
E33
Superheating too high
E34
Internal temperature too high
E35
(goods room)
Internal temperature too low
E36
(goods room)
Control temperature too low
E37
Control temperature too high
E38
Run-time fault in defrosting
E39
Fault in internal memory
E40
Heating gas temperature too
E41
high (pressure tube sensor)
Time-out
E42
Valve opening 100%
Condensation pressure too high
E43
External alarm
E44
Alarm acknowledgment
Acoustic signal/buzzer:
Press the [2] key.
Fault code/status LED:
Cannot be acknowledged. It appears until
the fault has been fixed.
4.4 Operation of Night blind/device
lighting function
The following operating elements are available for
opening/closing the night blind and switching the
device on/off during night operation (device-
specific):
- Operating element (see → Chapter 4.4.1)
- Day/night switch (see → Chapter 4.4.2)
4.4.1 Operating element night
blind/device lighting
134a devices)
An operating element (device-specific) is available
for opening the night blind and switching on the
device lighting during night-time operation; see →
Chapter 4.3 and Fig. 4.
Open the night blind and switch on the device light
(temporary activation of daytime operation):
Press the [1] key for at least 5 s.
Close the night blind again and switch off the device
lighting:
Occurs automatically after 60 min.
4.4.2 Day/night switch (only for R-134a
devices)
Switch "ON":
On all devices in the device network, the night
blind is opened and the device lighting is
switched on.
Switch "OFF":
On all devices in the device network, the night
blind is closed and the device lighting is switched
off.
Fig. 5: Day/night switch

5 Transport and storage

Check the device for transport damage after
delivery. Contact the maintenance service in case of
damage (see → Chapter 10.4).
For devices of type R-290: Damage
to refrigerant circuit.
The refrigerant can escape and
create an explosive gas/air mixture.
Risk of fire.
► Do not expose the device during
storage and transport to
temperatures higher than 70°C
(158°F).
► Ensure good ventilation.
► Observe the safety and warning
signs for devices with flammable
refrigerants (see → Chapter 1.6.2.1).
►Contact the maintenance service
(see→ Chapter 10.4).
43
(only for R-
WARNING