
75
valve operating mechanism).
• An acoustic signal is generated, and “A1” is displayed.
• The valve operating mechanism fully retracts the control
pin.
• Afterwards “A2” is displayed.
• Briefly press the key on the valve operating mechanism.
• “A3” is displayed and the operating mechanism fully
closes the valve.
• The antenna symbol flashes and “0%” is displayed.
• The first received radio signal is acknowledged by an
acoustic signal, the antenna symbol is permanently dis
played.
• Replace the cover of the battery compartment.