Fujitsu Comfort Series Service Manual page 29

Troubleshooting 8
OUTDOOR UNIT Error Method:
IPM error
Detective Actuators:
Outdoor unit Inverter PCB
Forecast of Cause:
1. Outdoor unit Inverter PCB failure
Check Point 1 : Replace Inverter PCB
Replace Outdoor unit Inverter PCB.
Indicate or Display:
Hydraulic unit :
Green Red
6 5
n : n times blinking
Detective details:
When the signal from FO terminal of IPM is "L"(=0V)
while the compressor stops.
03-10
Outdoor unit :
Mode Error L1 L2 L3 L4
2 6 5
: Light OFF : Light ON n : n times blinking
L5 L6