Fujitsu AJ 126LELDH Series Design & Technical Manual page 991

¢ Operation status (External output 1)
The output for CNB01 (1-2) is on when the
indoor unit is operating.
The output is off when the unit is stopped.
¢ Error status (External output 2)
The output for CNB01 (1-3) is on when an
error is generated for the indoor unit.
¢ Indoor unit status (External output 3)
The output for CNB01 (1-4) is on when the
indoor unit fan is operating.
The output is off when the fan is stopped
or during cold air prevention.
The output for CNB01 (1-4) is off during
thermostat off when DRY mode operation.
3-2. External output
Operation
Indoor unit
Stop
12 V
CNB01 (1-2)
Output
0 V
Error
Indoor unit
Normal
12 V
CNB01 (1-3)
Output
0 V
Fan run
Indoor unit
Fan stop
12 V
CNB01 (1-4)
Output
0 V
Ex.: Used for interlock energize for exhaust fan
- (08-23) -
3. Indoor unit