SiUS091133
Troubleshooting
Service Diagnosis
122
Troubleshooting
Check No.01
Refer to P.142
Check No.12
Refer to P.144
Check No.14
Refer to P.145
(R15
8
25)
Caution
N
G
OK
OK
OK
N
G
N
G
*
Discharge pipe thermistor
*
O
u
tdoor heat exchanger thermistor
*
O
u
tdoor temperat
u
re thermistor
*
Refrigerant shortage
*
Fo
u
r-
w
ay
v
al
v
e
*
W
ater mixed
*
Stop
v
al
v
e
Check No. 01
Check the thermistors.
Check No. 14
Check the refrigerant line.
Check No. 12
Check the electronic
expansion
v
al
v
e.
Replace the defecti
v
e
thermistor(s).
Replace the electronic
expansion
v
al
v
e or the coil.
Refer to the refrigerant line
check proced
u
re.
Replace the o
u
tdoor
u
nit
PCB.
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
