Fujitsu AOU48RLXFZ1 - External Output Signals and Base Heater

En-37
External output10. 3.
Wiring of connector10. 3. 1.
Wheninstallingconnectioncable,speciedpart(optionalparts)mustbeused.
Output Connector
1
2
Vcc
+
+
-
Vcc
1
2
CN951
CN952
Circuit diagram example
Outdoor unit
control PC board
Connected unit
(Field supply)
Connection
cable
Signal
*10m (33ft)
Connector
Load
Power
supply
Error status CN951
Compressor status CN952
* Make the distance from the PC board to the
connected unit within 10m (33ft).
1) Power supply
•Voltage(Chartsign=Vcc):DC24Vorless
2) Load
•Load:DC500mAorlessisrecommended
Error status output (CN951)10. 3. 2.
An air conditioner error status signal is produced
when a malfunction occurs.
Error status
Output signal
Error
ON
Normal
OFF
Compressor status output (CN952)10. 3. 3.
Compressor operation status signal is produced
when the compressor is running.
Comressor status
Output signal
Operation
ON
Stop
OFF
Base heater10. 3. 4.
A Base heater is a heating element that may be installed to melt the ice that may accumulate in the
condenser, drain pan.
Wheninstallingconnectioncable,speciedpart(optionalparts)mustbeused.
This output signal is produced when the outdoor temperature drop down to 2°C (36°F), and releases at
4°C (39°F).
Circuit diagram example
1
2
3
4
AC240V
*2
*1
P. C.B
1
2
3
4
AC240V
*3
*1
P. C.B
CN206
CN206
connected unit
connected unit
Base heater
Base heater
Connector
Connector
*1: Connect to pin 1 and pin 3. No connection pin 2 and pin 4.
*2: The allowable power consumption is 25W or less.
*3: If a load greater than 25W is applied, a contactor or relay should be used to operate and control the
base heater.
9379069342-02_IM.indb 37 17/5/2556 11:50:02