8 Troubleshooting
249
SMGB0064 rev.0 - 08/2011
8
Alarm code
38
Abnormality of Protective Circuit for Protection (Outdoor Unit) for IVX Series
• The RUN LED ickers and “ALARM” is displayed on the remote control switch.
• The unit number, the alarm code and the unit code are alternately displayed on the set temperature section. The unit
number and the alarm code are displayed on the display of the outdoor unit PCB.
- This alarm code is indicated when AC 220V or 240V is supplied to voltage PCN9#1 and #3 on PCB1 in the outdoor
unit during CMC is opened.
Is 220VAC or 240VAC
applied PCN9#1 and #3 during
stoppage?
Faulty PCB1.
No
Check wiring
connection
except PCB1.
Yes
PCB1 is normal
N14 CN15 PCN10 PCN13 PCN8
PCN9
SEG1
Y52C
Y20A
Y21
YCH
DSW1
PSW1
PSW2
PSW3
Phenomenon Cause Check item
Action
(Turn OFF main switch)
Faulty PCB1 Check PCB1 by seft-checking Replace PCB1
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