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5.2.5 System info
1. Turn the knob to select System info
2. Press the knob and Install date is displayed
3. Press the knob and the install date is displayed
4. Press the knob to return to Install date
5. Turn the knob to select SW controller
6. Press the knob to display the software controller version
7. Press the knob to return to SW controller
8. Press the return button
5.2.6 Radio settings - Pair/Unpair
The Programmable room thermostat and
Receiver are delivered together and are
factory paired, they will automatically
connect when the system is switched on.
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 knob at the same time
for more than 3 seconds and the Key lock is de-activated
6
Receiver
The Receiver is paired with the Programmable room
thermostat and they communicate via an RF signal. The
Receiver unit has an Override/Pairing push button and a LED to
indicate various sates of operation.
6.1
Override push button
If the RF signal between the Receiver and the Programmable
room thermostat is lost the LED, on the Receiver, will flash once
a second, indicating a local error (not a boiler fault).
During this time, the override push button can be briefly
pressed once (less than 3 seconds) to override the
Programmable room thermostat and maintain the boiler
function for heating and hot water.
During override the LED will be on but will flash off briefly to
indicate an override situation.
Press the override push button again briefly, to cancel the
override feature.
Comfort II– 6720810965 (2017/02)
to go back to System info
6.2
Pairing/Unpairing
The Programmable room thermostat and
Receiver are delivered together and are
factory paired, they will automatically
connect when the system is switched on.
1
Fig. 16
Receiver
[1] LED (for flash codes refer to the table below)
[2] Override button/Pairing button
Green indicator LED
Normal
operation
Manual
Flashing off, for
¼ second over a 2
override
second period
Pairing
2 x ¼ second flashes
modes
over 5 a sec. period
5 x ¼ second flashes
over 5 a sec. period
Push
Press for >5 seconds
button
for pairing
Press for >10 sec. for
unpairing
Press once, briefly, for
override, press again
for no override
Table 1
Receiver LED flash codes
Receiver
2
6720810965-15.1Wo
Indicates the status:
OFF No central heating zone is
calling for heat
ON One or more zones calling for
heat
Manual override is active
Pairing in operation
Unpairing in operation
Pairing or unpairing the
Receiver with the
Programmable room
thermostat(s)
Manually switching the boiler
ON or OFF
15
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