SiENBE04-808_A
4.9
OL Activation (Compressor Overload)
E5
Remote Control
Display
Method of
A compressor overload is detected through compressor OL.
Malfunction
Detection
If the error repeats twice, the system is shut down.
Malfunction
Reset condition: Continuous run for about 60 minutes without any other error
Decision
∗ The operating temperature condition is not specified.
Conditions
Defective discharge pipe thermistor
Supposed
Defective electronic expansion valve or coil
Causes
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.146
Check No.05
Refer to P.147
Check No.06
Refer to P.148
Check No.11
Refer to P.150
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Discharge pipe
thermistor disconnected?
NO
Check No. 06
Check the thermistors.
OK
Check No. 04
Check the electronic
expansion valve.
OK
Check No. 05
Check the four way valve.
OK
Check No. 11
Check the refrigerant line.
OK
YES
NG
∗ Discharge pipe thermistor
NG
NG
NG
∗ Refrigerant shortage
∗ Water mixed
∗ Stop valve
Troubleshooting
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the electronic
expansion valve or the coil.
Replace the four way valve
or the coil.
Replace the outdoor unit
PCB.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R11999)
114