SiUS041111
Check
Service Diagnosis
119
5.5
Four-Way Valve Performance Check
Check No.13
5.6
Inverter Unit Refrigerant System Check
Check No.14
(R14673)
N
O
YES
YES
N
O
*
Fo
u
r-
w
ay
v
al
v
e coil
Cooling / Dry :
N
o contin
u
ity
Heating : Contin
u
ity
T
u
rn off the po
w
er and t
u
rn it on
again.
Start heating operation.
Disconnect the fo
u
r-
w
ay
v
al
v
e coil
from the connector and check the
contin
u
ity.
Fo
u
r-
w
ay
v
al
v
e
coil resistance at 1000
~
2000
W
?
S
8
0
v
oltage at
20
8
- 230
V
AC
w
ith
compressor on? (Fig.
1)
Replace the o
u
tdoor
u
nit
PCB.
Replace the fo
u
r-
w
ay
v
al
v
e
coil.
Replace the fo
u
r-
w
ay
v
al
v
e.
(R14674)
(Fig. 1)
Compressor
ON
Voltage at S80
208 - 230 VAC
Time
Refrigerant system check
Check for refrigerant leakage.
See the service diagnosis on
refrigerant shortage (
U0
).
(R8259)
YES
NO
Place the thermistor.
Replace the refrigerant.
Is the discharge pipe
thermistor disconnected
from the holder?
