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www.blaubergventilatoren.de
KOMFORT EC L S6
TROUBLESHOOTING AND FAULT HANDLING
In case of alarm the unit is turned off and the wall-mounted display shows the alarm indicators, fig. 13. The possible alarms are listed in the table 8. 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 1000V after careful reading of the operation
manual.
Freeze protection temperature
sensor dropping off
Temperature sensor alarm
ALARM
ALARM REASON
INDICATOR
REMEDY
Damage of freeze protection
temperature sensor
Short circuit
Contact service centre
Sensor dropping off
Fig. 13. Alarm indication on the wall-mounted control panel
Table 8. 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 your seller for troubleshooting.
Low air flow
Too low set speed.
Set higher speed.
The filters and the fans are soiled, the heat exchanger is soiled.
Clean or replace the filters, fans and heat exchanger.
The air dampers, the supply diffusers or the exhaust grilles are
closed or soiled.
Remove and clean the air dampers, the supply diffusers, the
exhaust grilles to ensure free air flow.
Low supply air
temperature
The extract filter is soiled.
Clean or replace the extract filter.
The heat exchanger is iced.
Check the heat exchanger condition. Shutdown the unit if
required and turn it on after the freezing danger is no longer
imminent.
Noise, vibration
The impeller is soiled.
Clean the impeller.
The screw connection is loose.
Tighten the screws.
No flexible anti-vibration connectors.
Install the flexible anti-vibration connectors.
Condensate leakage
The drain system is clogged, damaged or wrong installed.
Clean the condensate drain system. Check the drain hose slope.
Make sure the U-trap is filled with water and the drain system is
frost-protected.
Table 9. Alarm list and troubleshooting
