Replacing Batteries; Troubleshooting; Weak Battery - HomeMatic HMIP-WTH Montageanleitung Und Bedienungsanleitung

Replacing batteries

7 Replacing 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 (see figure 6). You
do not need to open the device.
• Turn the electronic unit over to remove or insert
the batteries.
• Insert two new 1.5 V LR03/micro/batteries into
the battery compartment, making sure that you
insert them the right way round (see figure 7).
• Put the electronic unit back into the frame. Make
sure that "TOP" and the arrows on the back side
point upwards and that the clips on the mount-
ing plate latch into the openings on the electronic
unit.
• Please pay attention to the flashing signals of the
device LED while inserting the batteries (see „8.4
Error codes and flashing sequences" on page
45).
42
Once the batteries have been inserted, the wall thermo-
stat will perform a self-test/restart (approx. 2 seconds).
Afterwards, initialisation is carried out. The LED test dis-
play will indicate that initialisation is complete by lighting
up orange and green.
Never recharge standard batteries. Do not throw
the batteries into a fire. Do not expose batteries
to excessive heat. Do not short-circuit batteries.
Doing so will present a risk of explosion.
Used batteries should not be disposed of with
regular domestic waste! Instead, take them to
your local battery disposal point.
8

Troubleshooting

8.1

Weak battery

Provided that the voltage value permits it, the wall ther-
mostat will remain ready for operation also if the battery
voltage is low. Depending on the particular load, it may
be possible to send transmissions again repeatedly, once
the batteries have been allowed a brief recovery period.
If the voltage drops too far during transmission, the emp-
ty battery symbol ( ) and the corresponding error code
will be displayed on the device (see „8.4 Error codes and
flashing sequences" on page 45). In this case, replace
the empty batteries by two new batteries (see „7 Replac-
ing batteries" on page 42).
Troubleshooting
43