Malfunctions
You may be able to rectify the following faults by checking the possible causes yourself:
• Appliance does not function:
– Is the appliance switched on?
– Is the plug correctly fitted in the mains socket?
– Is the fuse intact?
• Loud running noise:
– Is the appliance set up firmly on the floor?
– Does the appliance cause nearby items of furniture or objects to vibrate? Please note that noises caused by the refrigerant circuit cannot be avoided.
• The temperature is not low enough:
– Is the temperature setting correct (see "Setting the temperature")?
– Does the separately installed thermometer show the correct read- ing?
GB
External alarm
We recommend connecting the appliance to an external alarm device.
There are various connection options at the back of the appliance.
The appliance may only be connected to an external alarm device by trained personnel.
– Is the ventilation system working properly?
– Is the appliance set up too close to a heat source?
•
appears in the display:
–Reset the real time clock (see "Setting the real time clock").
If none of the above causes ap- ply and you cannot rectify the fault yourself, contact the nearest customer service department stating the type designation 1, service number 2and appliance number 3 as indicated on the type plate.
Shutting your appliance down
Optional temperature sensor connection
Floating alarm output
Connection to RS485 interface
Terminating resistor
When connecting several appli- ances via the RS485 interface, the terminating resistor must remain on the last appliance.
Remove the terminating resis- tors from the appliances in between.
If your appliance is to be shut down for any length of time, switch it off and disconnect the plug or switch off or unscrew the fuse. Clean the appliance and leave the door open in order to prevent unpleasant smells.
Note
The connectors are secured with screws. To remove the connectors, undo the left and right screws.
Floating alarm output
These three contacts can be used to connect the appliance to an optical or acoustic alarm device.
The connection is designed for 250 V / 8 A AC or 36 V / 8 A DC.
N.O
Alarm output
Connection for a visual warning light or an acoustic alarm signal.
N.C
Operating light
Connection for a control lamp to indicate that the appliance is in normal mode.
COM
External power supply unit 250 V AC (alternating current) or 36 V DC (direct current - positive pole)
19