Operation Mode Selection Control; Sw1: Cool Mode Selection Switch; Sw2: Heat Mode Selection Switch - Toshiba MMY-MAP0804HT8-E Service Manual

6-8-6. Operation Mode Selection Control

NOTE

SW1: COOL mode selection switch

SW2: HEAT mode selection switch

COOL (SW1)
ON
OFF
OFF
* The display
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.
Jumper wire
J01 connected
(factory default)
J01 cut
The optional P.C. board should be connected to the header outdoor unit (U1).
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Header outdoor unit
Connection
Outdoor unit
cable
interface PCB
CN510
SW1: Cooling mode specified input switch
SW2: Heating mode specified input switch
Input signal
HEAT (SW2)
OFF
operation allowed
ON
operation allowed
OFF Normal operation
Operation mode selection control in progress)" appears on the remote controller
" (
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
Operation mode
COOL Fan operation at air flow rate set via remote controller
HEAT Fan operation at extremely low air flow rate
Fan operation at air flow rate set via remote controller as
FAN
normal
The selected operation mode is imposed on all indoor units operating in a different mode.
Mode selected at P.C. board
Normal
COOL
HEAT
manuals search engine
Optional PCB
TB1
COM
PJ17 COOL
HEAT
Operation Remarks
Only cooling
*
Only heating
*
Description of intervention
Operation status
Remote controller operation / display
All modes (COOL, DRY, HEAT and
FAN) available
Only COOL, DRY and FAN available "
Only HEAT and FAN available
114
Locally procured
SW1
SW2
Shield
wire
Remote controller
display
" " operation ready
operation mode control"
(turned on during remote
controller operation)