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1
Cooling mode
2
Heating mode
3
Dry mode
4
Fan mode
5
Stopping mode
1
Cooling mode
2
Heating mode
3
Stopping mode
Note : If the outdoor unit is already in the cooling mode, other indoor units
(in stopping mode, fan mode, thermo OFF) will not run a heating operation
when directed to do so, and “HEAT” on the remote controller will blink.
When the outdoor unit is already in the heating mode, the reverse will be true.
(The first selection made on the remote controller has the priority.)
All indoor units in operation are in cooling mode.
All indoor units in operation are in heating mode.
All indoor units are in fan mode or stopping mode.
NO
OK
If the step listed as the wrong example above is taken, thermo may go off.
The percentage of the demand listed in the table above is an approximate value based on the
compressor volume and does not necessarily correspond with the capacity.
(Wrong)
(Correct)
100%
100%
→
→
0%
75%
→
→
50%
50%
Demand control
steps
Adaptor for external input
(PAC-SC36NA)
CN3D
X
Y
X
Y
Maximum allowable length of wiring is 10 m.
SW1 : NIGHT MODE or demand command
SW2 : Demand command
X,Y
: Relay (contact rating DC1mA)
SW1
SW2
Orange 1
Brown
2
Red
3
Remote controller board
Relay circuit
Outdoor unit
controller board
Power supply to relay
To be
acquired
on site
[ Example of wiring connection ]
OPEN
OPEN
SHORT
SHORT
OPEN
SHORT
OFF
ON
Compressor ON/OFF
CN3D 1-3P
OPEN
SHORT
ON
OFF
NIGHT MODE
CN3D 1-2P
CN3D 1-2P
100% (no demand)
75%
0%
50%
CN3D 1-3P
Note the following steps to be taken when using the STEP DEMAND
(Example) When witching from 100% to 50%
SW4-7 : OFF (Compressor ON/OFF and NIGHT MODE)
SW4-7 : ON (STEP DEMAND)
11. Operation mode
(1) Indoor unit operation modes
An operation mode can be selected from the following 5 modes on the remote controller.
12. Demand control
Cooling/heating operation can be prohibited (thermo OFF) by an external input to the indoor units.
Note : When DIPSW4-7 are on, STEP DEMAND are possible. NIGHT MODE will become unavailable however.
(2)
Outdoor unit operation mode