External Input And Output - Fujitsu ASUH18LMAS Service Manual

2. External input and output

Indoor unit PCB
CN65
(Ext. in/out PCB)
PCB
Indoor unit
External input
and output (UT↔-
↓CS↓Z2)
CN47 (Ext. out)
CN46 (Ext. in)
External input
Operation/Stop
Forced stop
—
Operation/Stop
Forced stop
Forced thermostat off
—
External input and output PCB
SW301
CN314
CN313
CN312
CN311
CN310
External output Connector
— CN46
Operation status
Error status
Indoor unit fan
operation status
Cooling thermostat
On
CN47
Heating thermostat
On
External heater
output
Set point
attainment status
CN313/
CN314
—
CN313
Operation status
Error status
Indoor unit fan
operation status
External heater
CN310/
output
CN311/
Remote controller
CN312
output
Cooling high/low
output
Heating thermostat
On
- (05-12) -
SW302 Rotary switch
CN308
Input
Input select
signal
Dry contact Edge
— —
Edge/Pulse
Dry contact/
Apply voltage
Edge
— —
2. External input and output