190
275/350/425/500 Boost (H) ∙ Malfunction
LED indicator on printed
circuit board
Green
Red, orange
Red, 2x orange
Red, 3x orange
2x red, orange
2x red, 2x orange
2x red, 3x orange
2x red, 4x orange
2x red, 5x orange
3x red, 4x orange
3x red, 3x orange
4x red, 1x orange
4x red, 2x orange
4x red, 3x orange
6x red, orange
Green, red
LED indicator RF
3-position switch
2x red
Green
Red
2x green
Orange
2x orange (after use)
2x orange
3x orange
LED indicator RF C0
2
switch (surface-mounted)
Green
Red
2x red
3x red
4x red
Error code
Normal operation (no error).
Problem with the exhaust fan.
Problem with the supply fan.
Problem with both fans.
'Supply temperature too low' - shutdown.
Problem with the 'home' temperature sensor.
Problem with the 'outdoor' temperature sensor.
Problem with the 'to the house' temperature sensor.
Problem with the 'to the outdoors' temperature sensor.
Problem with the I2C connection.
Problem with the internal RH sensor.
Problem with the constant exhaust fl ow control.
Problem with constant fl ow control of the supply.
Problem with constant fl ow control in general.
ZoneControl communication error.
'Filter dirty' message.
Error code
Problem with the ventilation unit.
The requested action has been correctly communicated.
Communication problem.
Successful connection of the 3-position RF selector.
The battery life of the 3-position RF selector has expired.
Replace the fi lter, reset the fi lter message.
Successful disconnection of the 3-position RF selector.
Access to settings denied.
Error code
The requested action was communicated correctly.
Communication problem.
Problem with the ventilation unit.
Problem with the CO
sensor.
2
Successful disconnection from the RF CO
selector.
2