Worcester Greenstar Comfort I RF, Installation And Operating Instructions Manual, Page: 15 / 24

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Programmer/Receiver settings
Comfort I– 6720810964 (2014/07)
When the devices are being paired, the Room thermostat and
Programmer/Receiver must be in the same mode of pairing.
Refer to section 6.5 for pairing of the Room thermostat.
Ensure that the Room thermostat is positioned as suggested in
Section 3.2 and away from metal objects that might attenuate
the RF signal.
Before mounting the Room thermostat on the wall, it is good
practice to find a position that affords good signal strength.
When the units have been paired, check the signal strength at
the Room thermostat. If the signal strength is low, try another
position in that room until the best possible signal strength is
obtained, refer to section 6.7 for the
Signal strength at the
Room thermostat.
▶ Turn the knob to select Radio settings
▶ Press the knob to display Pairing , that is RF pairing of the
devices in the system
▶ Turn the knob to display Unpairing or Pairing
▶ If Pairing is chosen, press the knob and pairing is displayed
with advancing bars, when the pairing between the devices
has been made a number is displayed confirming the
number of Room thermostats connected
▶ If Unpairing is chosen, press the knob and Unpairing is
displayed with advancing bars, when the unpairing
between the devices has been made the number 0 is
displayed confirming that the Room thermostat(s) have
been disconnected
5.3 Key lock
When the Key lock is active, no user interaction with the units
is possible, if a button is pressed or the knob turned/pressed
the word
Key lock is displayed.
Key lock ON
To activate the Keylock :
▶ Hold down the CH Select button and the knob at the same
time for more than three seconds and the Keylock is active
Key lock OFF
To de-activate the Key lock :
▶ Hold down the CH Select button and the knob at the same
time for more than three seconds and the Key lock is de-
activated and the normal display is shown