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SiUS04-904
Troubleshooting
108
Service Diagnosis
4.7
OL Activation (Compressor Overload)
Remote
Controller
Display
E5
Method of
Malfunction
Detection
A compressor overload is detected through compressor OL.
Malfunction
Decision
Conditions
If the compressor OL is activated twice, the system is shut down.
The error counter is reset if this or any other error does not occur during the following 60-minute
compressor running time (total time).
The operating temperature condition is not specified.
Supposed
Causes
Refrigerant shortage
Four-way valve malfunctioning
Outdoor unit PCB defective
Water mixed in the local piping
Electronic expansion valve defective
Stop valve defective
Troubleshooting
Check No.04
Refer to P.144
Check No.05
Refer to P.145
Check No.06
Refer to P.146
Check No.11
Refer to P.149
(R7137)
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
the connector, or parts damage may occ
u
r.
YES
Malf
u
nctioning
*
Discharge pipe thermistor
N
O
F
u
nctioning
F
u
nctioning
Malf
u
nctioning
*
Refrigerant shortage
*
W
ater mixed
*
Stop
v
al
v
e defecti
v
e
Malf
u
nctioning
F
u
nctioning
Malf
u
nctioning
F
u
nctioning
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the
v
al
v
e itself or
the coil.
Refer to the refrigerant line
check proced
u
re.
Replace the o
u
tdoor
u
nit
PCB.
Replace the fo
u
r-
w
ay
v
al
v
e
coil or the
v
al
v
e itself.
Replace the o
u
tdoor
u
nit
PCB.
Discharge pipe
thermistor disconnected?
Check No. 06
Check the thermistors.
Check No. 05
Check the fo
u
r-
w
ay
v
al
v
e.
Check No. 11
Check the refrigerant line.
Check No. 04
Check the electronic
expansion
v
al
v
e.
Содержание FTXS09HVJU
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Страница 9: ...Safety Considerations SiUS04 904 viii Safety Considerations...
Страница 10: ...SiUS04 904 List of Functions 1 Part 1 List of Functions 1 Functions 2...
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