Solenoid Valve (Sv); Motor - Fujitsu WATERSTAGE WS A050DD6 Series Maintenance Document

Split system single phase type
2.4.4 Service parts information 4 : Outdoor unit solenoid valve (SV)
Check point 1 : Check connections
Check connection of connector
(Loose connector or open cable)
WO*A060LDC
WO*A080LDC, WO*A100LDT
2.4.5 Service parts information 5 : Outdoor unit fan motor
Check point 1 : Check rotation of fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
If Fan or Bearing is abnormal, replace it.
Check point 2 : Check resistance of Outdoor Fan Motor
Refer to below. Circuit-test "Vm" ans "GND" terminal.
(Vm : DC voltage, GND : Earth terminal)
If they are short circuited (below 300kΩ), replace Outdoor Fan motor and Main PCB
Pin number Terminal function
(wire color) (symbol)
1 (Red) DC voltage (Vm)
2 No function
3 No function
4 (Black) Earth terminal (GND)
5 (White) Control voltage (Vcc)
6 (Yellow) Speed command (Vsp)
7 (Brown) Feed back (FG)
Maintenance Document 1589-3
4-WAY VALVE
4-WAY VALVE
Check point 2 : Check solenoid coil
Remove connector and check if coil is open
(normal resistance value of each coil : 1495+/-
7%)
If resistance value is abnormal, replace
solenoid coil.
Check point 3 : Check voltage from main
PCB
Remove connector and check the voltage
(AC230V).
If the voltage does not appear, replace Main
PCB.
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