16
III. Display
The unit has a display fitted on the front. This LED can show a message depending on
the colours of the LED and the number of times it lights up.
An overview of potential indications is shown in the table under 7.2 IV. Printed circuit board.
IV. Printed circuit board
The status of the HRC can be read with the red/green LED on the printed circuit
board in the HRC. The status can be read off via the flashing pattern of the LED.
The following errors are possible:
Overview of indications on display/circuit board
Indication
Message on display/circuit board
Configuration mode active
continuous green
In operation
1x green
Start up unit/RF communication
1x orange
Replace filter
1x green 1x red
Extract fan error
1x red 1x orange
Supply fan error
1x red 2x orange
Error both ventilation fans
1x red 3x orange
Temperature emergency shutdown
2x red 1x orange
Temperature sensor fault x22
2x red 3x orange
Temperature sensor fault x23
2x red 4x orange
Humidity sensor fault
3x red 3x orange
Modbus extractor ventilator fault
4x red 1x orange
Modbus supply ventilator fault
4x red 2x orange
Fault both Modbus ventilators
4x red 3x orange
