Fujitsu AUUH18LUAS Service Manual page 209

 Installation configuration of individual connection
External heating device is installed individually. (No use of indoor unit fan)
WARNING
Operation
Heater off
• Design and install external heater appropriately with considering its protection.
• Inappropriate designing and installation of external heater may cause a fire by emitted heat from
the external heater.
• Fujitsu General Ltd. is not responsible for inappropriate designing or installation of external
heating device.
3-5. Details of control output function
Example of heating device:
- Floor heating device
• Heater is off as shown in following diagram of heating
temperature.
• Other than heating mode
• Error occurred
• Forced thermostat off
- (05-27) -
ON / OFF
Condition
3. External input and output (for indoor unit)