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

Troubleshooting

5.12 OL Activation (Compressor Overload)

E5
remote control
Display
Outdoor Unit LED
A
Display
Method of
A compressor overload is detected through compressor OL.
Malfunction
Detection
Malfunction
Decision
Conditions
∗ The operating temperature condition is not specified.
Supposed
Causes
Troubleshooting
Check No.04
Refer to P.253
Check No.05
Refer to P.254
Check No.06
Refer to P.255
Check No.11
Refer to P.258
226
1 2 3
5 4 1 4
If the compressor OL is activated twice, the system will be shut down.
The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Refrigerant shortage
Four way valve malfunctioning
Outdoor unit PCB defective
Water mixed in the local piping
Electronic expansion valve defective
Stop valve defective
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 expantion
valve.
Functioning
Check No. 05
Check the four way valve.
Functioning
Check No. 11
Check the refrigerant line.
Functioning
4
1
YES
Malfunctioning
Malfunctioning
Malfunctioning
Malfunctioning
SiENBE12-620
E5
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
Service Diagnosis
(R4697)