Check
SiUS04-904
Service Diagnosis
145
5.1.3 Four Way Valve Performance Check
Check No.05
09/12 Class
15/18/24 Class
(R
8
312)
N
O
YES
YES
N
O
(Fig. 1)
V
oltage at S
8
0
DC220-240
V
O
N
Compressor
Time
T
u
rn off the po
w
er and t
u
rn it on
again.
Disconnect the fo
u
r-
w
ay
v
al
v
e coil
from the connector and check the
contin
u
ity.
Start the heating-mode r
u
n.
*
Fo
u
r
w
ay-
v
al
v
e coil
Cooling / dry :
N
o contin
u
ity
Heating : Contin
u
ity
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.
Fo
u
r-
w
ay
v
al
v
e
coil resistance at
3
κΩ
±0.5
κΩ
?
S
8
0
v
oltage at
DC 220-240
V
w
ith
compressor on? (Fig.
1)
(R02
8
6)
N
O
YES
YES
N
O
(Fig. 1)
V
oltage at S
8
0
DC220-240
V
O
N
Compressor
Time
T
u
rn off the po
w
er and t
u
rn it on
again.
Disconnect the fo
u
r-
w
ay
v
al
v
e coil
from the connector and check the
contin
u
ity.
Start the heating-mode r
u
n.
*
Fo
u
r-
w
ay
v
al
v
e coil
Cooling / dry :
N
o contin
u
ity
Heating : Contin
u
ity
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.
Fo
u
r-
w
ay
v
al
v
e
coil resistance at 1500
Ω
?
S
8
0
v
oltage at
DC 220-240
V
w
ith
compressor on? (Fig.
1)
Summary of Contents for FTXS09HVJU
Page 1: ...SiUS04 904 Applied Models Inverter Pair Heat Pump Inverter Pair Wall Mounted Type H Series...
Page 9: ...Safety Considerations SiUS04 904 viii Safety Considerations...
Page 10: ...SiUS04 904 List of Functions 1 Part 1 List of Functions 1 Functions 2...
Page 72: ...Control Specification 15 18 24 Class SiUS04 904 62 Function and Control...
Page 77: ...FTXS09 12HVJU SiUS04 904 66 Operation Manual...
Page 78: ...SiUS04 904 FTXS09 12HVJU Operation Manual 67...
Page 83: ...FTXS09 12HVJU SiUS04 904 72 Operation Manual is no longer displayed on the LCD...
Page 84: ...SiUS04 904 FTXS09 12HVJU Operation Manual 73 is no longer displayed on the LCD...
Page 85: ...FTXS09 12HVJU SiUS04 904 74 Operation Manual...
Page 86: ...SiUS04 904 FTXS09 12HVJU Operation Manual 75...
Page 87: ...FTXS09 12HVJU SiUS04 904 76 Operation Manual 3P232717 1C...
Page 90: ...SiUS04 904 FTXS15 18 24HVJU Operation Manual 79 is no longer displayed on the LCD...
Page 91: ...FTXS15 18 24HVJU SiUS04 904 80 Operation Manual...
Page 94: ...SiUS04 904 FTXS15 18 24HVJU Operation Manual 83 is no longer displayed on the LCD...
Page 95: ...FTXS15 18 24HVJU SiUS04 904 84 Operation Manual Do not hit or forcefully push the operation...
Page 96: ...SiUS04 904 FTXS15 18 24HVJU Operation Manual 85 is no longer displayed on the LCD...
Page 97: ...FTXS15 18 24HVJU SiUS04 904 86 Operation Manual is no longer displayed on the LCD...
Page 98: ...SiUS04 904 FTXS15 18 24HVJU Operation Manual 87 is no longer displayed on the LCD...
Page 99: ...FTXS15 18 24HVJU SiUS04 904 88 Operation Manual...
Page 100: ...SiUS04 904 FTXS15 18 24HVJU Operation Manual 89...
Page 101: ...FTXS15 18 24HVJU SiUS04 904 90 Operation Manual 3P232717 2C...