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4

OPERATION

Figure 7 shows the central controller LCD display and but-

ton controls. Refer to this figure in the operation sections that
follow.

RED STATUS INDICATOR

POWER ON/OFF

LCD DISPLAY (SEE DETAIL BELOW)

(1.6)

INDOOR
UNIT
ADDRESS
DISPLAY
GRID

NOT USED

SWING
ON

NOT USED

ERROR/
PROTECTION
CODE

CENTRAL
CONTROLLER
OPERATION
STATUS

NOT USED

OPERATION MODE
SETTING

COOLING
MODE LOCK

HEATING
MODE
LOCK

REMOTE
CONTROLLER
LOCK

TOUCHPAD
LOCK

FAN SPEED

INDOOR UNIT
TEMP.
SETPOINT

INDOOR UNIT
OPERATING
MODE

TIMED
OPERATION

INDOOR 
UNIT
TEMP.

FAHRENHEIT/
CELSIUS

LCD DISPLAY DETAIL

A40-1884

Fig. 7 — Central Controller Display

Summary of Contents for 40WA900024

Page 1: ...entral controller accessory is available for use with the single phase VRF variable refrigerant flow indoor units listed in Table 1 Table 1 Central Controller Accessory Usage INSTALLATION Controller I...

Page 2: ...e slots provided on the top of the controller to open the back mounting plate See Fig 2 8 Attach the back mounting plate directly over the opening in the wall using 4 screws and route the control cabl...

Page 3: ...connections See Fig 6 for complete system central controller wiring diagram X X Y Y E E CENTRAL CONTROLLER OUTDOOR UNIT a40 1875 Fig 5 Controller Connections P Q E X Y E 3 4 3 4 3 4 3 4 3 4 5 MATCH R...

Page 4: ...1 6 INDOOR UNIT ADDRESS DISPLAY GRID NOT USED SWING ON NOT USED ERROR PROTECTION CODE CENTRAL CONTROLLER OPERATION STATUS NOT USED OPERATION MODE SETTING COOLING MODE LOCK HEATING MODE LOCK REMOTE CO...

Page 5: ...ontal coordinates are 00 to 15 The sum of the vertical and horizontal coordinates is the address of the indoor unit The unit s location on the grid has no relation to the unit s physical location For...

Page 6: ...e delayed operation start time for the selected indoor units Press the INC button to se lect the start hour from 0 to 24 hours Each button press incre ments the setting by 1 2 hour for the first 10 ho...

Page 7: ...the same time The controller displays 88 the display flashes 5 Use the INC and DEC buttons to set the appropriate func tion as shown below 6 Press OK 7 Use the INC and DEC buttons to select the code...

Page 8: ...tion at port on PC board Tighten the connection at port on PC board Sensor is short circuited Using multi meter measure resistance of the sensor If the resistance is 100 ohms change the sensor PC boar...

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