Fujitsu ASUG09LZAS Service Manual page 165

¢ Control output function
• Operation/Stop status
Rotary SW on External
input and output PCB
1
B
C
D
The output is low when the unit is stopped.
• Error status
Rotary SW on External
input and output PCB
1
C
D
The output is ON when an error is generated for the indoor unit.
• Indoor unit fan operation status
Rotary SW on External
input and output PCB
1
2
B
D
Output signal
On
Low → High
Off
High → Low
2-4. Details of function
External output
External input and output PCB
Operation
Indoor unit
Stop
On
CN310
Off
External output
External input and output PCB
Error
Indoor unit
Normal
On
CN311―312
Off
External output
External input and output PCB
The indoor unit fan is operating.
The fan is stopped or during cold air prevention.
During thermostat off when in dry mode operation.
Fan run
Indoor unit
Fan stop
On
CN311―312
Off
- (05-19) -
Output
signal
Off → On
CN310
On → Off
Output
signal
Off → On
CN311
On → Off
Off → On
CN312
On → Off
Output
signal
Off → On
CN312
On → Off
Off → On
CN311
On → Off
Condition
Command
Operation
Stop
Command
Error
Normal
Error
Normal
Command
Fan run
Fan stop
Fan run
Fan stop
2. External input and output