SiBE06-708_A Troubleshooting
Service Diagnosis 94
4.9 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 error repeats twice, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
∗
The operating temperature condition is not specified.
Supposed
Causes
Defective discharge pipe thermistor
Defective electronic expansion valve or coil
Defective four way valve or coil
Defective outdoor unit PCB
Refrigerant shortage
Water mixed in refrigerant
Defective stop valve
Troubleshooting
Check No.04
Refer to P.127
Check No.05
Refer to P.128
Check No.06
Refer to P.129
Check No.11
Refer to P.131
(R11999)
Caution
YES
NG
∗ Discharge pipe thermistor
NO
OK
OK
NG
∗ Refrigerant shortage
∗ Water mixed
∗ Stop valve
NG
OK
NG
OK
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the electronic
expansion valve or the coil.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
Replace the four way valve
or the coil.
Replace the outdoor unit
PCB.
Discharge
pipe thermistor
disconnected?
Check No. 06
Check the thermistors.
Check No. 05
Check the four way
valve.
Check No. 11
Check the refrigerant
line.
Check No. 04
Check the electronic
expansion valve.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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