Ventilation Fault Indicator product suppliers | Passive House Systems IE

Ventilation Fault Indicator

fault indicator

Passive House Systems non invasive ventilation systems provide occupied areas of a building or home with paramount indoor air quality. Our ventilation systems provide a free flow of pollutant free air by removing excess water vapour levels that support the growth of harmful bacteria, mould, mildew and other pathogens. A building or home ventilation system is important to the health of the building as well as its occupants. Mechanical ventilation systems therefore require a ventilation fault indicator. This indicator will indicate that the system is operating correctly and alert the occupant to a fault, should one occur.

Ventilation Fault Indicator Ireland

The Passive House Systems Ventilation Fault Indicator is compatible with various types of mechanical ventilation systems – HRV, MEV and DCV. The simple design allows for uncomplicated installation and understanding. This makes monitoring the functioning of your ventilation systems effortless.


How does Passive House Systems Ventilation Fault Indicator work?

Make sure your Ventilation Fault Indicator is in an area where it is always visible and not in a remote location. The attic or above the ceiling are not suitable locations. (Technical Guidance Documents - See Section TGD Part F 2019). The LED indicator will illuminate red with an error when there is virtually no air passing the sensor and a constant green LED indicates normal operation.

  • Constant Green LED: Normal operation with airflow at least 4 litres/second.
  • Flashing Red LED: Fault with airflow less than 4 litres/second.
  • No LED: Power has been disabled to the sensor.

Passive House Systems Ventilation Fault Indicator Product Features

  • 1nr. Air flow sensor,
  • 1nr. RJ11 cable, 10m long,
  • 1nr. power supply with 3-pin plug, 1.2m long.
  • 1nr. fault indicator plate to fit a standard single surface box.


  • EN 55014-1:2017 +A11 2020 and EN55014-2:2015
  • EN 61000-3-2:2006 +A1:2009 + A2:2009
  • EN 61000-3-3:2008
  • Equipment classification: Class B