Fujitsu AUXB04GALH Service Manual page 148

Trouble shooting 60
OUTDOOR UNIT Error Method:
Slave Outdoor Unit Error
Detective Actuators:
Slave Unit
Check Point 1 : Check the slave unit
Slave unit 7 seg display check
Check by troubleshooting based on displayed error code.
Indicate or Display:
E9U.2
Outdoor Unit : E. 9 U. 2 (Only for master outdoor unit)
Indoor Unit : No display / Operation LED 9 times Flash, Timer LED 15
Error Code : *
* Master Outdoor unit : 9 U. 2 /
Slave Outdoor unit and Service Tool indicate applicable Error code
Detective details:
Error signal received from slave unit of same refrigerant system
04-72
timse Flash Filter LED Continuous Flash