Fujitsu Super High Power Series Design & Technical Manual page 48

• Hydraulic indoor unit: Flashing of the LED visible on the interface card.
LED
LED 2 (Green)
1 Flash
2 Flashes
3 Flashes
3 Flashes
4 Flashes
4 Flashes
6 Flashes
6 Flashes
6 Flashes
6 Flashes
6 Flashes
6 Flashes
6 Flashes
7 Flashes
7 Flashes
7 Flashes
7 Flashes
7 Flashes
7 Flashes
8 Flashes
8 Flashes
9 Flashes
9 Flashes
9 Flashes
9 Flashes
10 Flashes
10 Flashes
10 Flashes
10 Flashes
10 Flashes
Continuous flashing (1 sec On / 1 sec Off) Pump down operation
Continuous lighting
LED 1 (Red)
Communication error between Hydraulic unit and Outdoor
1 Flash
unit
3 Flashes Connection forbidden (series error)
1 Flash Indoor unit power supply abnormal
Serial communication error between controller PCB and
2 Flashes
interface PCB
1 Flash Heat pump capacity signal error (Open or short)
2 Flashes Hydraulic indoor unit heat exchanger thermistor error
1 Flash Outdoor unit power supply abnormal
2 Flashes Outdoor unit main PCB error
3 Flashes Inverter error
4 Flashes Active filter error
5 Flashes Outdoor unit IPM error
Outdoor unit power short interruption error (protective
7 Flashes
operation)
8 Flashes Outdoor unit magnetic relay error
1 Flash Discharge thermistor error
2 Flashes Compressor thermistor error
3 Flashes Heat exchanger thermistor (outlet/intermediate) error
4 Flashes Outdoor thermistor error
7 Flashes Outdoor unit heat sink temperature thermistor error
8 Flashes Expansion valve thermistor error
4 Flashes Current sensor error
6 Flashes Pressure sensor error/Pressure switch error
4 Flashes Current trip
Detection of compressor position error/Compressor start
5 Flashes
up error
7 Flashes Outdoor unit fan motor 1 error
8 Flashes Outdoor unit fan motor 2 error
1 Flash Discharge temperature protection
3 Flashes Compressor temperature protection
4 Flashes Outdoor unit pressure error
5 Flashes Low pressure abnormal
9 Flashes Current overload error
Off Defrosting
- (03-4) -
Error contents
1. User interface and remote controller (Optional parts)