Maintenance; What To Do; For The Installer; Checking The Delivery - Zehnder Hygro-Presence sensor Bedienungsanleitung

2.2. Maintenance

Hygro-Presence
maintenance
However, their
compromised due to dirt in the sensors.
Remove the dirt at the front with a dry (not
moist!) duster.

2.3. What to do?

Both blue LEDs of the Hygro-Pres-
ence sensor are flashing rapidly
The Hygro-Presence sensor has lost
contact with the domestic fan. The system
is attempting to restore communication.
This can take some time. In order to
ensure proper ventilation in the meantime,
you can leave your doors and windows
ajar.
The Hygro-Presence sensor is not
working. All LEDs are off.
Check the power supply in the meter
cupboard. If so required, contact your
fitter. In order to ensure proper ventilation
in the meantime, you can leave your doors
and windows ajar.
22 - EN
sensors require
throughout their
performance can

3. For the installer

no
life.
3.1. Checking the
be
delivery
■
Hygro-Presence sensor front with
PCB and connector;
■
Hygro-Presence sensor casing with
PCB and mains connector;
■
Documentation

3.2. Fitting conditions

In order to determine whether the Hygro-
Presence sensor can be installed in a
certain area, the following aspects must
be taken into account:
■
The Hygro-Presence sensor must
be installed according to the
general and locally applicable
safety and installation regulations
of power companies, as well as the
instructions in this manual;
■
The location of the unit must be
selected in such a way as to ensure
that there are no large metal objects
between the domestic fan and the
Hygro-Presence sensor;
■
The Hygro-Presence sensor must be
installed in a frost-free space;
■
The areas in which the Hygro-
Presence sensor is fitted must have a
230V electrical connection.