114
6-8-6. Operation Mode Selection Control
NOTE
SW1: COOL mode selection switch
SW2: HEAT mode selection switch
* The display “ (Operation mode selection control in progress)” appears on the remote controller
Indoor unit operation intervention function [only supported by SMMS-i (4 series)]
The statuses of indoor units operating in a mode different from the selected operation mode can be changed by
changing the status of a jumper wire (J01) provided on the interface P.C. board of the header outdoor unit.
The optional P.C. board should be connected to the header outdoor unit (U1).
Input signal
Operation Remarks
COOL (SW1) HEAT (SW2)
ON OFF
Only cooling
operation allowed
*
OFF ON
Only heating
operation allowed
*
OFF OFF Normal operation
Jumper wire Description of intervention
J01 connected
(factory default)
All indoor units operating in a mode different from the selected operation mode (prohibited-mode indoor units)
become non-priority units (thermostat OFF).
Prohibited-mode indoor units
J01 cut
The selected operation mode is imposed on all indoor units operating in a different mode.
SW1: Cooling mode specified input switch
SW2: Heating mode specified input switch
CN510 PJ17
TB1
SW1
SW2
COM
HEAT
COOL
Locally procured
Optional PCB
Header outdoor unit
Shield
wire
Connection
cable
Outdoor unit
interface PCB
Operation mode Operation status
Remote controller
display
COOL Fan operation at air flow rate set via remote controller “ ” operation ready
HEAT Fan operation at extremely low air flow rate
FAN
Fan operation at air flow rate set via remote controller as
normal
Mode selected at P.C. board Remote controller operation / display
Normal
All modes (COOL, DRY, HEAT and
FAN) available
COOL Only COOL, DRY and FAN available “ operation mode control”
(turned on during remote
controller operation)
HEAT
Only HEAT and FAN available
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