Operating Elements And Display Indicators; Night Blind/Device Lighting; Alarm - Daikin AHT CB 124 Traduction De La Notice Originale

AHT Cooling Systems GmbH | en
Check of internal temperature
Responsibility
– Operating personnel
Frequency
See Maintenance [see } Chapter 11]
5.2 Operating elements and
display indicators
The operating elements and display indicators are loc-
ated at bottom in the foot panel.
Keys are available as control elements, with the fol-
lowing assignments:
Fig. 5: Operating elements
Control element
Activate temporary daytime op-
(night blind up/appliance light-
Acknowledge acoustic alarm
Fig. 6: Display screens
Display
(Night blind closed/appliance
Unit defect-free and operational
440031_1_0321
Function
eration
ing on)
Meaning of display
Day mode
(Night blind open/appliance
lighting on)
Cooling function active
Evaporator ventilator active
Defrosting active
Night operation
lighting off)

Alarm

(Normal operation)
Cooling function active
Display
5.2.1

Night blind/device lighting

Activate temporary
daytime operation –
Press
Open night blind/
seconds.
Switch on the appli-
ance lighting
Night operation –
Close night blind/ Occurs automatically after 30
Switch off the appli- min.
ance lighting
5.2.2 Alarm
Display alarm
An error code appears on the display as a flashing in-
dication alternating with the internal temperature.
The symbol appears on the display.
Certain errors may cause an acoustic alarm to be is-
sued by way of a built-in buzzer.
Troubleshooting measures for the occurrence of alarm
indicators; see [see } Chapter 10.3].
Error Meaning
code
Thermostat emer-
gency operation
Control board de-
fective
Air inlet sensor
Air outlet sensor
Evaporator sensor
High pressure
sensor
Compressor safety
chain (high pressure/
low pressure)
Goods area sensor
(HACCP)
Supply voltage too
low
Battery defective
Software class B
EEPROM (control
board defective)
Goods area temper-
ature too high
Goods area temper-
ature too low
Control temperature
too low
Control temperature
too high
Control and display elements | 5
Meaning of display
Defrosting active
for at least 5
Meaning (EN)
On Failsafe
HW failure or Mod-
bus 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)
High cabinet temper-
ature
Low cabinet temper-
ature
Low control temper-
ature
High control temper-
ature
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