homexpert THR842DUK User Manual page 15

Appendix
Re-binding procedure
If you must replace a wireless thermostat or relay box, the system
will not work until both devices can communicate with each other.
This is called binding. Follow the steps below to re-establish wireless
communication.
1 Hold thermostat about 1 or 2 metres from the relay box, then
press and hold the relay button for 15 seconds.
Press and hold relay box button
Note: After 5 seconds the red light flashing pattern will change,
5. but you must hold down the button for at least 15 seconds to
°
c
clear previous binding information from memory.
0
2 Release the relay button, then press and hold it again for 5
Press
seconds, until the red light flashes evenly ("binding" mode).
and hold
3 Release the relay button, then press and hold the thermostat
ON/OFF button to turn off the thermostat.
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se
4 Press and hold the thermostat p and q buttons until the screen
changes as shown at left.
Press
and hold
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Re-binding procedure
(continued from page 28)
5 Press the p button repeatedly until the display shows "CLr."
CL
Then press the ON/OFF button to clear previous binding to other
devices.
6 Press the p button again to return to binding mode.
7 Press the ON/OFF button again to re-establish wireless
communication with relay box. If successful, the red light on the
C0
relay box will turn off, and the thermostat will return to normal
nt
operation in Off mode a few seconds later.
25.
°
c
0
homexpert by Honeywell THR842DUK Wireless Digital Thermostat
tm
Red light
should turn off
29