Changing The Batteries - HomeMatic HmIP-WTH-1 Installation And Operating Manual

Changing the batteries

8 Changing the batteries
If the symbol for empty batteries ( )
appears in the display or in the app,
please replace the used batteries by
two new LR03/micro/AAA batteries.
You must observe the correct battery
polarity.
To replace the batteries of the wall
thermostat, please proceed as follows:
• Once mounted, the electronic unit
(B) can easily be pulled out of the
frame (A) and removed from the
mounting plate (F). To remove the
electronic unit from the frame, take
hold of the sides of the electronic
unit and pull it out
You do not need to open the de-
vice.
• Turn the electronic unit over to re-
move or insert the batteries.
• Insert two new 1.5 V LR03/micro/
batteries into the battery compart-
ment, making sure that you insert
them the right way round.
• Put the electronic unit back into
the frame. Make sure that "TOP"
and the arrows on the back side of
the electronic unit point upwards
and that the clips on the mounting
plate latch into the openings on
the electronic unit.
(see figure).
• Please pay attention to the flashing
signals of the device LED while in-
serting the batteries
codes and flashing sequences" on
page 26).
Once the batteries have been inser-
ted, the wall thermostat will perform
a self-test/restart (approx. 2 seconds).
Afterwards, initialisation is carried out.
The test display will indicate that initia-
lisation is complete: orange and green
lighting.
(see „9.4 Error
24