Fujitsu AOUH24LPAS1 - Page 152

• Indoor unit fan operation status
Rotary SW on External
Input and Output PCB
External output
Output
signal
Command
1
External Input and Output PCB
CN312
Off → On Fan run
On → Off Fan stop
2
B
D
CN311
Off → On Fan run
On → Off Fan stop
Output signal Condition
On
The indoor unit fan is operating.
Low → High
Off The fan is stopped or during cold air prevention.
High → Low During thermostat off when in dry mode operation.
Fan run
Fan stop
On
Off
CN311―312
Indoor unit
•
External heater output
Rotary SW on External
Input and Output PCB
External output
Output
signal
Command
2
B
C
External Input and Output PCB CN312
Off → On Heater on
On → Off Heater off
2-4. Details of function - (05-22) - 2. External input and output
FIELD WORKING FIELD WORKING