Troubleshooting
Si10-417
40
Service Diagnosis
5.2.4 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 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).
* The operating temperature condition is not specified.
Supposed
Causes
Refrigerant shortage
Four way valve malfunctioning
Outdoor unit PCB defective
Water mixed in the local piping
Electronic expansion valve defective
Stop valve defective
Trouble
shooting
Check No.4
Refer to
P.151
Check
No.5-1
Refer to
P.155
Check No.6
Refer to
P.157
Check No.11
Refer to
P.162
Discharge
pipe thermistor
disconnected?
Check No. 11
Check the refrigerant
line.
Check No. 6
Check the thermistors
Check No. 4
Check the electronic
expantion valve.
Check No. 5-1
Check the four way
valve.
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
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.
(R2841)
YES
Malfunctioning
∗
Discharge
pipe
thermistor
NO
Functioning
Functioning
Functioning
Functioning
Malfunctioning
Malfunctioning
∗
Refrigerant
shortage
∗
Water mixed
∗
Stop valve
defective
Malfunctioning
Si10-417.fm Page 40 Wednesday, September 22, 2004 6:38 PM
