Trane CXAJ series Installation, Operation And Maintenance Manual page 45

Forbid to operate by the remote telephone.
If the remote telephone operation is valid, the centralized controller will display the phone icon (as
shown in the figure below). At this time, press ⑨ for 3 seconds to cancel the remote telephone
operation. The phone icon of centralized controller will disappear. If ⑨ is pressed for 3 seconds
again, the remote telephone operation will be valid.
Switching of backlight function
If SW1-8 is ON, any key can be pressed to start the backlight for 30 seconds; SW1-8 is OFF , only
⑧ (Backlight) can be pressed to start the backlight.
Used as an indoor unit temperature controller
The centralized controller can be used as a temperature controller. If SW1-4 is ON, the centralized
controller will display the status of indoor unit with the minimum number in normal state, and
can be used as an indoor unit temperature controller for direct operation.
If
time, various routine operations can be performed. If Exit is pressed, return to the temperature
controller operation of the single indoor unit.
Module Control
The single-unit cascade system is a system which can realize the centralized control function
by connecting multiple single units through the network cable. The centralized controller can
operate any cascaded single unit and can operate all cascaded single units by group. The
functions of any cascaded single unit are the same and independent of each other.
The module control system is a system which can realize the centralized control function by
connecting one host unit and multiple slave units through the network cable. The module control
system shares a water system, the host unit undertakes the operation of the system pump, all
slave units share this water system, and the system automatically adjusts the energy balance,
controls the time-sharing startup of the units, automatically loads and unloads the energy and
realizes the average wear among the units.
Control Requirements
No.0 unit is the host unit, and other units are slave units.
All units share a waterway system.
For N Type unit, all slave units on the network are subject to the water inlet temperature of No.0
unit;
(Group) is pressed, the normal mode of the centralized controller will be entered. At this
Module Control System
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