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

SiEN12-710A
4.8

OL Activation (Compressor Overload)

E5
Remote Control
Display
Method of
A compressor overload is detected through compressor OL.
Malfunction
Detection
Malfunction " If the compressor OL is activated twice, the system will be shut down.
Decision " The error counter will reset itself if this or any other error does not occur during the following
Conditions
∗ The operating temperature condition is not specified.
Supposed
" Refrigerant shortage
Causes " 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.146
Check No.05
Refer to P.148
Check No.06
Refer to P.149
Check No.11
Refer to P.152
Service Diagnosis
60-minute compressor running time (total time).
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Discharge
pipe thermistor
disconnected?
NO
Check No. 06
Check the thermistors.
Functioning
Check No. 04
Check the electronic
expansion valve.
Functioning
Check No. 05
Check the four way valve.
Functioning
Check No. 11
Check the refrigerant line.
Functioning
YES
Malfunctioning
∗ Discharge pipe thermistor
Malfunctioning
Malfunctioning
Malfunctioning
∗ Refrigerant shortage
∗ Water mixed
∗ Stop valve defective
Troubleshooting
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the valve itself or
the coil.
Replace the four way valve
coil or the valve itself.
Replace the outdoor unit
PCB.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R7137)
119