ESTABLISHING COMMUNICATION
9
To set up the initial link between the Master Thermostat
and the base module please follow the steps below:
Establishing Communication between T955W Master Thermostat and the Base Module
Press and hold the
base module
button for 3
seconds. The
Blue LED
will flash when ready to
receive initial signal from
T955W
. (Base module
must be powered by 24V.
Blue LED
will be
continuously on when 24V power is present.)
Hold the
Light key
(shown here) of the
T955W
for 10 seconds, the
Blue LED
on the base
module will stop flashing after communication
has been established between
base module
and the
T955W
.
1.
2.
Note:
If the base module does not receive a
signal from the
T955W
for 15 minutes it
will turn off all relays until communication
is reestablished. The
Blue LED
on the
base module will also turn off to show
communication has been lost.
Note:
The
Blue LED
on the
base module
will be
on when power is present. The
Blue LED
will flash 3 times every time it receives a
signal from
T955W
. When a relay is on the
corresponding LED relay indicator will be on.
Note:
If communication has been lost for 1 hour
and if freeze protection is enabled, heat and
emergency heat relays will be turned on.
The heat and emergency heat relays will
turn on for 10 minutes every hour if there
has been a call for heat in the last 24 hours.
Important:
DO NOT hold the light button
on the
T955W
for more than
10 seconds after Step 2
above has been completed.
Holding the light button down
will break the communication
link and the base module
button will need to be
pressed again to reestablish
communication.
Light key
Blue LED
LED Relay Indicators
Base Module Button
Easy, Two Step Communication Link
Step 1.
Step 2.
