Ol Activation (Compressor Overload) - Daikin K-Series Service Manual

SiBE061121.book Page 89 Monday, April 25, 2011 3:21 PM
SiBE061121

4.10 OL Activation (Compressor Overload)

E5
Remote
Controller
Display
Method of A compressor overload is detected through compressor OL.
Malfunction
Detection
Malfunction
Decision
∗
Conditions
Supposed
Causes
Troubleshooting
Check No.01
Refer to P.119
Check No.12
Refer to P.121
Check No.13
Refer to P.122
Check No.14
Refer to P.122
Service Diagnosis
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
The operating temperature condition is not specified.
Defective discharge pipe thermistor
Defective outdoor electronic expansion valve or coil
Defective four way valve or coil
Defective outdoor unit PCB
Refrigerant shortage
Water mixed in refrigerant
Defective stop valve
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Discharge
YES
pipe thermistor
disconnected?
NO
NG
Check No. 01
Check the thermistors.
∗ Discharge pipe thermistor
OK
Check No. 12
NG
Check the outdoor electronic
expansion valve
coil.
OK
Check No. 13 NG
Check the four way
valve.
OK
Check No. 14
NG
Check the refrigerant
∗ Refrigerant shortage
line.
∗ Water mixed
∗ Stop valve
OK
Troubleshooting
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the outdoor
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.
(R14438)
89