6 Troubleshooting
Outdoor unit
SMGB0135 rev.0 - 06/2020
61
6
6.1.3 Self-diagnosis lighting mode
!
D A N G E R
•
DC350V
•
CUT THE POWER SOURCE AND WAIT MORE THAN 10 MINUTES BEFORE SERVICE WORK.
Confirm the DC Voltage at the measuring point shown in below figure must be less than 10V.
F2
F3
F4
Outdoor fan connector
Test / Service switch
Compressor connector
N (DC V-)
P (DC V+)
Self check (JW001)
Self check (JW002)
(CN24)
LD301
Other check points
Diagnosis for reversing valve operation error:
•
Check reversing valve wire connection either wire broken or not.
-
If it is OK check 3.15 A fuse.
-
If it is broken replace fuse or OU Controller.
• When display the communication error or the outdoor do not run at all.
-
Please check the continuity of the indoor - outdoor connecting cord (F cable).
During Stop
LD301
Self-Diagnosis Name
Light
Normal operation
2 sec lighting and 0.3 sec lights out repetition
Overload operation (normal operation)
