Fujitsu AUXB04GALH Service Manual page 111

Trouble shooting 33
OUTDOOR UNIT Error Method:
Outdoor Unit Reverse Phase,
Missing Phase Wire Error
Detective Actuators:
Outdoor unit Main PCB
1. Noise, momentary open, voltage drop
3. Filter PCB (Main) defective
Check Point 1 : Noise, momentary open, voltage drop
Check if temporary voltage drop was not generated.
Check if momentary open was not generated.
Check if ground is connection correctly or there are no related cables near the power line.
OK
Check Point 2 : Check the power supply
Power cable connection, open check
OK
Check Point 3 : Check Filter PCB (Main) and Main PCB
Check Filter PCB (Main) and Main PCB.
(Refer to "Service Parts Information 3 ".)
Indicate or Display:
E61. 5
Outdoor Unit : E. 6 1. 5
Indoor Unit
Error Code
Detective details:
Reverse phase prevention circuit detected reversed phase input or
input was not normal at the time of power ON.
Reverse phase prevention circuit detected open-phase after power ON.
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 9 U / 6 1
2. Power supply defective
4. Main PCB defective
04-41