Replacing Batteries; Troubleshooting; Weak Batteries - HomeMatic HMIP-eTRV Mounting Instruction And Operating Manual

Replacing batteries

valve. There will be a pleasant room temperature
right away because of the radiated heat.
The operating lock of the radiator thermostat
can be activated and deactivated via the Home-
matic IP app. Tap on the menu symbol in the top
left of the screen of your app and select the menu
item "Device overview". Select your radiator ther-
mostat to switch the operating lock "ON" or
"OFF".
7 Replacing batteries
If the symbol for empty batteries (
play or in the app, please replace the used batteries by
two new LR6/mignon/AA batteries. You must observe the
correct battery polarity.
To insert the batteries into the radiator thermostat, please
proceed as follows:
• Push the battery compartment cover (D) to the
back and downwards to remove it from the de-
vice (see figure 7).
• Remove the (old) batteries.
• Insert two new 1.5 V LR6/mignon/AA batteries
into the battery compartment, making sure that
you insert them the right way round (see figure 8).
• Close the battery compartment (D).
• Please pay attention to the flashing signals of the
50
) appears in the dis-
device LED while inserting the batteries (see „8.4 Er-
ror codes and flashing sequences" on page 53).
Once the batteries have been inserted, the radiator ther-
mostat will perform a self-test (approx. 2 seconds). Af-
terwards, initialisation is carried out. The LED test display
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 batteries

Provided that the voltage value permits it, the radiator
thermostat will remain ready for operation also if the bat-
tery 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
Troubleshooting
51