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Malfunction
• Calibration of the ServoFlow Kits installed (optional accessory) is not possible.
• The LEDs of the fan speeds are blinking.
•
The symbol in the control panel blinks 13x red.
Cause Remedy
There is a fault in the device. • Call in customer service of the specialised company.
• Check correct connection of the pressure hoses between differential
pressure sockets 1 and 2, and also pressure sensors on the ServoFlow Kit.
• Check that pressure hoses from the ServoFlow Kit have been laid
correctly. The pressure hoses cannot be bent.
The system pressure is too low. • Call in the customer service of the specialised company and have the
correct connection of the air lines checked.
The system pressure is too high. • Check whether all ventilation grates, valves and air outlets are open.
10.2. ERROR MESSAGES
Error messages are displayed by different modes of blinking of the symbol in the control panel. The period
between the blinking sequences is roughly 3 seconds.
Malfunction Symbol Consequence
A fire alarm was triggered. Blinks red 1x The ventilation system stops.
The extract air fan has had a breakdown. Blinks red 2x The ventilation system stops.
The supply air fan has had a breakdown. Blinks red 3x The ventilation system stops.
The summer bypass has had a breakdown. Blinks red 4x The ventilation system stops.
The ServoFlowKit (optional accessory) has had
a breakdown.
Blinks red 5x The ventilation system stops.
The supply air temperature has dropped below
+5°C.
Blinks red 6x The ventilation system stops. Every 2 hours
the ventilation system turns on by itself for 5
minutes in order to check conditions for normal
operation.
The temperature sensor outdoor air (T1) has
had a breakdown.
Blinks red 7x The ventilation system stops.
The temperature sensor supply air (T2) has had
a breakdown.
Blinks red 8x The ventilation system stops.
The temperature sensor extract air (T3) has had
a breakdown.
Blinks red 9x The ventilation system stops.
The temperature sensor exhaust air (T4) has
had a breakdown.
Blinks red 10x The ventilation system stops.
The VOC sensor (optional accessory) has had a
breakdown.
Blinks red 11x The ventilation system is running at fan speed
V2.
The preheating radiator (optional accessory)
has had a breakdown.
Blinks red 12x The ventilation system stops.
Calibration of the ServoFlow Kits (optional
accessory) is not possible.
The red light blinks
13x, the LEDs of the
fan speeds blink
The ventilation system stops.
The pre-set timer for filter replacement has
been exceeded.
The red light stays lit For up to 60 days, normal operation continues
to be possible. After this, the ventilation system
turns off.
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