Backup Control; Replacing An Equipment Interface Module; Replacing A Thermostat; At The Portable Comfort Control - Honeywell THX9321 Prestige 2.0 Product Data

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THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE

BACKUP CONTROL

This section explains when backup control is used. For
example, if batteries in the wireless indoor sensors are
depleted.
If the Thermostat is Part of the Temperature
Average
1. The thermostat controls the system using the remaining
sensors that are part of the temperature average.
2. If there are no remote indoor sensors remaining, the
thermostat controls the system using its internal sensor.
3. If the internal thermostat sensor is not available and a
Return Air Sensor is connected, the Backup Control in
the EIM is used. The backup control maintains 55 °F in
heat, 85 °F in cool and operates the fan continuously to
sense and control temperature.
If the Thermostat is NOT Part of the
Temperature Average
1. The thermostat controls the system using the remaining
sensors that are part of the temperature average.
2. If there are no remote indoor sensors remaining and a
Return Air Sensor is connected, the Backup Control in
the EIM is used. The backup control maintains 55 °F in
heat, 85 °F in cool and operates the fan continuously to
sense and control temperature.

REPLACING A THERMOSTAT

When you replace a thermostat, you must reset the RedLINK
accessories before connecting them to the new thermostat.
Follow the instructions below:
At the Equipment Interface Module (EIM)
1. Press and hold the CONNECT button on the EIM until
the CONNECTED LED glows amber (hold for about 10
seconds).
2. Follow the prompts on the screen to connect the new
thermostat to the EIM. See page 10.

At the Portable Comfort Control

1. Press and hold the blank space (or arrow) in the lower
right hand corner of the screen until the display changes
(hold for about 4 seconds).
68-0311—02
Press and hold
the blank space
(or arrow may be
present)
Fig. 316.
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IAQ WITH EIM
2. Press REMOVE, then YES to disconnect from the old
thermostats.
3. To reconnect the thermostat, go to "Linking RedLINK™
Accessories" beginning on page 16.
At the Indoor Sensor, RedLINK Internet
Gateway, Entry/Exit Remote, Vent-Filter
Boost Remote or TrueSTEAM Wireless
Adapter
1. Press and hold the CONNECT button on the accessory
until the status light glows amber (hold for about 10 sec-
onds).
2. To reconnect the thermostat, go to "Linking RedLINK™
Accessories" beginning on page 16.
REPLACING AN EQUIPMENT
INTERFACE MODULE
When you replace an EIM, you must reset the RedLINK
accessories before connecting them to the new thermostat.
Follow the instructions below:
At the thermostat
1. Press MENU, scroll down and select Installer Options,
enter the password (Date Code) when prompted, scroll
down and select Wireless Manager, scroll down and
select Remove Device, then select This Thermostat.
2. Follow the prompts on the screen to connect the thermo-
stat to the new EIM.
At the Portable Comfort Control
1. Press and hold the blank space (or arrow) in the lower
right hand corner of the screen until the display changes
(hold for about 4 seconds). See Fig. 316.
2. Press REMOVE, then YES to disconnect from the old
thermostats. To reconnect the thermostat, go to "Linking
RedLINK™ Accessories" beginning on page 16.
At the Indoor Sensor, RedLINK Internet
Gateway, Entry/Exit Remote, Vent-Filter
Boost Remote or TrueSTEAM Wireless
Adapter
1. Press and hold the CONNECT button on the accessory
until the status light glows amber (hold for about 10 sec-
onds).
2. To reconnect the thermostat, go to "Linking RedLINK™
Accessories" beginning on page 16.
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