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Orange-Red
Blue-Red
Split system single phase type
If resistance value is abnormal, replace EEV.
Check point 5 : Check opening and closing operation of valve
When valve is closed, it has a temp. (Add period)
difference between inlet and outlet.
CLOSE
Example : Hot gas
Pipe (In)
HI TEMP.
There is no refrigerant flow coming to EEV(INJ) while the liquid injection is inactive. Check whether the liquid
injection is active before executing check point 5 for EEV(INJ).
Check point 6 : Check stainer
Stainer normally does not have temperature difference between inlet and outlet as shown in 1, but if there is a
difference as shown in 2, there is a possibility of inside clogged. In this case, replace stainer.
Pipe (In)
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)
WOYA060LFCA
WO*A060LFCA
WO*A080LFCA, WO*A100LFTA
WOYA080LFCA, WOYA100LFTA
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
Maintenance document "1792 - EN"
4 (Black)
Earth terminal (GND)
5 (White)
Control voltage (Vcc)
at 20°C
Pipe (Out)
Normal TEMP.
Pipe (Out)
4-WAY VALVE
4-WAY VALVE
Turn on power and check operation noise.
If an abnormal noise does not show, replace Main
PCB.
If it is open, it has no temp. (Add period) difference
between inlet and outlet.
OPEN
Example : Hot gas
Pipe (In)
HI TEMP.
Pipe (In)
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
Pipe (Out)
HI TEMP.
Pipe (Out)
- 35 -
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