15
11. Help with problems
Error table
Problem/
Display
Cause Remedy
flashes Batteries flat Replace the batteries.
e1
sensor
Device defective Replace the device.
e2
valve
Motor can not be
moved.
Check the
installation.
The radiator
stays hot
The radiator valve
does not close
fully.
Check the
installation. If
appropriate, change
to full-stroke mode
(Parameter 8).
The room
does not heat
up during
optimization
Heating is not
switched on in
time
Ensure that the pre-
controller switches
on the heating.
Synchronize the on/
off times of boiler
control and radiator
controller.
Motor does not
move
Valve baseplate
not interlocked
Set the slider to the
position .
Emergency operation when batteries are flat
1. Unlock the radiator controller. To do so, push the slide
at the radiator controller towards .
2. Pull the radiator controller off the valve baseplate.
3. Operate the radiator valve by hand using the
adjustment dial on the valve baseplate.
–
+
Restoring the factory setting
1. Keep the PROG button pressed for approximately
10 seconds until Parameter 1 flashes (left-hand digit).
2. Use the adjustment dial to select Parameter 19 (left-
hand digit) and Setting 1 (right-hand digit).
3. Press the OK button to restore the factory setting.
12. Technical data
Type HR90
Protection class IP30
Supply voltage Battery type LR6, AA, AM3
Alkaline: 2 x 1.5 V
Lithium: 2 x 1.5 V
NiMH: 2 x 1.2 V
Connection to the radiator M30 x 1.5
Ambient temperature 0 ... 50 °C
Dimensions 96 x 54 x 60 mm
Ambient conditions For living area, business and
trade sections as well as
small businesses
Humidity 10 ... 90 % rel. humidity
13. Disposal
The radiator controller has to be disposed of in
accordance with WEEE directive 2002/96/EC –
Waste Electrical and Electronic Equipment directive.
f Dispose of the packaging and product
in a corresponding recycling center.
f Do not dispose of the unit with the
domestic refuse.
f Do not burn the product.
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