Intended Use; Troubleshooting And Maintenance - eQ-3 K Mode D'emploi

The programmable radiator control unit is used to control
a conventional radiator valve. Only operate the device in
inside rooms and avoid the influence of moisture, dust and
sunlight or external heat radiation. Any type of use other
than that described in these operating instructions does
not comply with the intended use and leads to automatic
exclusion from warranty and liability claims. This also ap-
plies in the case of conversions and modifications. The
devices are solely intended for private use.

22. Troubleshooting and maintenance

Error code in
the display
Battery symbol
( )
F1
F2
F3
The programmable radiator control unit performs a
decalcifying run once a week on Saturday at 12:00 to
protect against calcification of the valve. During this
„CAL" appears in the display.

21. Intended use

Problem
Battery output
too low
Valve drive is
stiff to move
Actuating range
too large
Actuating range
too small
Rectification
Replace the bat-
teries
Check the installati-
on and heating valve
Check the fastening
of the radiator con-
trol unit
Check the heating
valve
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