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www.blaubergventilatoren.de
FRESHBOX E120
TROUBLESHOOTING AND FAULT HANDLING
In case of alarm the unit is turned off and the display shows the alarm indicators, Fig. 11. The possible alarms are listed in the table 4. The alarms must be removed
ONLY in a service centre or by a service expert, duly authorized for unassisted operations at the units up to 1000 V after careful reading of the operation manual.
Freeze protection sensor drop-off
Condensate drain pan is full
Temperature sensor failure
ALARM INDICATION
REMEDY
Temperature sensor failure
Short circuit of one or two temperature sensors. Contact the unit seller for
troubleshooting of a short circuit.
Freeze protection sensor dropping off
Contact the unit seller for troubleshooting of dropping off of the freeze protection
sensor.
Condensate drain pan is full
Follow the steps described in the Maintenance.
Fig. 11. Alarm indication on the control panel
Table 4. Unit alarm list
Fault
Possible reason
Troubleshooting
The fan does not start
when the unit is on
No power supply or wrong connection to power mains.
Connect the unit to power mains. Troubleshoot the connection
error.
Jammed motor, soiled impeller blades.
Remove the motor jam, clean the impeller blades.
Automatic switch
tripping
Short circuit in power grid.
Turn the unit off and contact the seller for troubleshooting.
Low air fl ow
Too low set speed.
Set higher speed.
The fi lters and the fans are soiled, the heat exchanger is soiled.
Clean or replace the fi lters, fans and heat exchanger.
The supply and extract grilles, air ducts, the outer hood are
closed or soiled.
Remove and clean the ventilation system components to
ensure free air fl ow.
Low supply air
temperature
The extract fi lter is soiled.
Clean or replace the extract fi lter.
The heat exchanger is frozen.
Check the heat exchanger condition. Shutdown the unit if
required and turn it on after the freezing danger is no longer
imminent.
The electric heater is defective.
Contact the unit Seller.
Noise, vibration
The impeller is soiled.
Clean the impeller.
The screw connection is loose.
Tighten the screws.
Condensate outfl ow
The condensate limit switch is defective.
Contact the unit Seller.
Table 5. Alarm list and troubleshooting
