Fujitsu WSYA050ML3 Design & Technical Manual page 62

• Hydraulic indoor unit: A fault in the outdoor unit is indicated by LED located on the hydraulic
unit interface board.
LED
LED 2 (Green) LED 1 (Red)
1 Flash 1 Flash
2 Flashes 3 Flashes
3 Flashes 2 Flashes
4 Flashes 2 Flashes
6 Flashes 2 Flashes
6 Flashes 3 Flashes
6 Flashes 5 Flashes
7 Flashes 1 Flash
7 Flashes 2 Flashes
7 Flashes 3 Flashes
7 Flashes 4 Flashes
7 Flashes 7 Flashes
7 Flashes 8 Flashes
8 Flashes 4 Flashes
8 Flashes 6 Flashes
9 Flashes 4 Flashes
9 Flashes 5 Flashes
9 Flashes 7 Flashes
10 Flashes 1 Flash
10 Flashes 3 Flashes
10 Flashes 5 Flashes
10 Flashes 12 Flashes
Error
WSYA050ML3
number
WSYA080ML3
11
23
32
42 Hydraulic unit heat exchanger thermistor error
62
63 —
65
71
72
—
73
Heat exchanger thermistor
(outlet) error
74
77 —
78 Expansion valve thermistor error
84
86 Pressure sensor error/Pressure switch error
94 Current trip (Permanent stoppage)
Detection of compressor
95 position error
(Permanent stoppage)
97
Discharge temperature protection
A1
Compressor temperature protection
A3
A5 Low pressure abnormal
AC —
- (03-4) -
Error contents
WSYA100ML3
Serial communication error
Combination error
UART communications error
Outdoor unit main PCB error
Inverter error
Outdoor unit IPM error
Discharge thermistor error
Compressor thermistor error
Heat exchanger thermistor
(center) error
Heat exchanger thermistor
(outlet) error
Outdoor thermistor error
Heat sink thermistor error
Current sensor error
Compressor motor control
(Permanent stoppage)
Outdoor unit fan motor error
(Permanent stoppage)
(Permanent stoppage)
Pressure error
Outdoor unit radiator
temperature error
1. User interface and remote controller (Optional parts)
(PFC)
error