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15. Troubleshooting
Problem
Permanent signal tone and ‘F1’
is displayed on the valve operat-
ing mechanism
Permanent signal tone and ‘F2’
is displayed on the valve operat-
ing mechanism
Permanent signal tone and ‘F3’
is displayed on the valve operat-
ing mechanism
No radio symbol displayed on
the valve operating mechanism.
The valve operating mechanism
generates a tone sequence
every hour. The valve is 30%
opened.
‘Low battery’ symbol is dis-
played. The valve operating
mechanism generates a tone
sequence every 2 minutes for
one hour.
‘LOC’ is displayed when a but-
ton is pressed
The window symbol ‘
’ blinks
Possible cause
• The valve is too tight or the
valve operating mechanism
is blocked
• Control range is too large
• Valve operating mechanism
is not mounted to the heat
ventilator
• Control range is too small
• Radio connection failure due
to interference
• Heating control’s batteries
are low
• Heating control’s code is not
right (or has been
misadjusted)
• The valve operating mecha-
nism’s batteries are almost
empty
Button lock is activated
• Radio connection failure to a
door/window contact sensor
• Empty batteries
Solution
• Remove the valve operating mecha-
nism
• Manually check valve operation
• Mount the valve operating mecha-
nism again
• If necessary, consult a heating tech-
nician
• Mount the valve operating mecha-
nism again
• Unsuitable valve
• Insert a spacer that is 1mm thick (a
washer, for example) between the
heat ventilator and the actuator
• Mount the valve operating mecha-
nism again
• Unsuitable valve
• Install the heating control in a differ-
ent location
• Replace the heating control’s bat-
teries
• Transmit the current security code
to the valve operating mechanism
• Replace the batteries
• Deactivate the button lock
• Identify and rectify the fault
• Replace the batteries
