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We recommend to use high-quality alkaline batteries
only. Operation of the heating control using accumula-
tors or conventional zinc-carbon batteries is possible,
operating time and radio range of the heating control
will, however, be reduced.
Furthermore, there will be a risk of malfunctions.
Make sure to insert the batteries correctly to avoid
damage to the electronic components of the heating
control.
• Close the battery compartment.
• The heating control performs a short display test. After
the display test, you have to set date and time).
• If the battery symbol (“
“) is displayed on the LC dis
play, the battery voltage is low and the batteries should
be replaced as soon as possible.
The same applies, if the radio range decreases or if data are
no longer displayed on the LC display.
6. Wall mounting of “FHT8R“
a) Choosing an appropriate mounting location
Make sure to choose an appropriate location for mounting
the “FHT8R” heating control. This has to meet the follow
ing requirements:
• central position in the room where the temperature is to
be controlled
• easy access for convenient operation
• mounting at eye level for easy reading of the display
• no mounting on a badly insulated outer wall
• no direct sunlight
• no interference from heat sources such as radiators, TV
sets, lamps, refrigerators,etc.