Daikin AT12BV1LS Pocket Manual page 42

Si10-417
5.2.5 OL Activation (Compressor Overload)
Remote
Controller
Display
Outdoor
Unit LED
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Service Diagnosis
E5
A 1 2
5 4
A compressor overload is detected through compressor
OL.
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.
Refrigerant shortage
Four way valve malfunctioning
Outdoor unit PCB defective
Water mixed in the local piping
Electronic expansion valve defective
Shut-off valve defective
3 4
1 4 1
Troubleshooting
41