oventrop R-Tronic RT B Installation And Operating Instructions Manual page 54

2. Remove the empty batteries on the reverse side of the "R-Tronic". Press the
return- or Auto/Manu-button after removal of the batteries. Insert the new
batteries. The position of the new batteries is specified by the markings +/-.
3. Reset date and time (see paragraph 4.6 on page 20). All other settings will be
maintained.
► After having replaced the batteries, the "R-Tronic" is ready for operation again.
NOTE
Alkaline batteries must never be charged (risk of explosion). Never throw batteries into
a fire and do not open them.
If the devices are not used temporarily, the batteries should be removed as they may
leak. Batteries must not be disposed of with the standard waste but via your local
battery collection point.
"Aktor MH/MD CON B"
A necessary battery replacement of the "Aktor M CON B" is displayed as follows:
 Warning symbol in the default view of the "R-Tronic" display
 Message BATTERY EMPTY in the menu
INFORMATION ► DIAGNOSIS ► AKTOR M CON B ► AKTOR ID
 The red LED at the actuator flashes shortly at intervals of 50 seconds.
As soon as the batteries are EMPTY, the actuator will move to an "emergency or
frost protection position". The radiator valve will now only be opened up to 20%
which means that hot water is still passing through the radiator.
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Operation
(Illustr. 53)
R-Tronic
(reverse side)