Fujitsu Airstage J-II Series Design & Technical Manual page 543

Application
When a MODE1
temperature sensor OFF output:
switch is connected Enabled
and cooling and P1 : ON, COOL or
heating switching is HEAT
performed. P2 : ON, COOL or
HEAT
Operation conditions:
Unit operationg only
Others setting are
arbitrary.
When preventing MODE1
chattering noise Delay-time setting:
within 1 minute of Delay
the external contact P1 : Arbitrary
switch. operation state
P2 : Arbitrary
operation state
Others setting are
arbitrary.
Setting Wiring
Thermal sensor SW
An external switch
controller is connected to
all the indoor units of the
same refrigerant system
and cooling and heating
are switched by one
temperature sensor.
Indoor
unit
External
SW controller
- (05 - 180) -
Operation example
Indoor
P1 : ON, COOL, 80°F (26°C)
unit
P2 : ON,HEAT, 70°F (21°C)
ON
SW1
OFF
Operation state
ON
OFF
P1 : OFF P2 : ON, COOL, 80°F (26°C)
SW1
ON
Operation state
ON
External
contact 1
OFF
P2 P1
COOL
COOL HEAT
74°F 80°F
70°F
(23°C) (26°C)
(21°C)
P2 P1
1min 1min
COOL
80°F
(26°C)