Self-Diagnosis Lighting Mode - Hitachi YUTAMPO Series Service Manual

6 Troubleshooting
Outdoor unit

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
P (DC V+)
N (DC V-)
Compressor connector

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
2 sec lighting and 0.3 sec lights out repetition
61 SMGB0135 rev.0 - 06/2020
F3
F4
LD301
Light
Outdoor fan connector
(CN24)
Test / Service switch
Self check (JW001)
Self check (JW002)
Self-Diagnosis Name
Normal operation
Overload operation (normal operation)
LD301
6