Faults Displayed On The 3-Phase Outdoor Unit - Fujitsu WATERSTAGE WOYG112LHT Maintenance Document

Air to Water Heat Pump (Split integrated DHW type)
10 .4 Faults displayed
on the 3-phase outdoor unit
To access the electronic board, you must remove the
front (right-hand) facing from the outdoor unit.
Faults are coded by LED flashes.
When an error occurs:
- The LED "ERROR" (2) blinks.
- Press once on the switch "ENTER" (SW4).
- The "ERROR" (2) LED blinks several times depending
on the error's type (see below).
LED display
1 Flash
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
9 Flashes
10 Flashes
11 Flashes
12 Flashes
13 Flashes
14 Flashes
15 Flashes
16 Flashes
17 Flashes
18 Flashes
19 Flashes
20 Flashes
22 Flashes
Installation and operating manual "1768 - EN"
Error contents
Serial forward transfer error.
Discharge thermistor error.
Pressure sensor error.
Heat-exchange thermistor (outlet) error.
Heat-exchange thermistor (intermediate) error.
Expansion valve thermistor error.
Outdoor temperature thermistor error.
Compressor thermistor error.
Heat sink thermistor (inverter) error.
Heat sink thermistor (P.F.C.) error.
Discharge temperature protection (permanent stoppage).
Compressor temperature protection (permanent stoppage).
Current trip (permanent stoppage).
Detection of compressor position error (permanent stoppage).
Compressor start up error (permanent stoppage).
Fan motor 1 error (permanent stoppage).
Fan motor 2 error (permanent stoppage).
Inverter error.
P.F.C. error.
Low pressure abnormal.
Hydraulic unit abnormality condition.
LED
and switches
figure 56 - Location of switches and LED
on 3-phase outdoor unit
(1) (2) (3)
SW2
SW3
figure 57 - LED display on the 3-phase outdoor unit
Terminal
block
(4)
SW4 SW5
- 73 -