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Troubleshooting
SiEN04-306D
108
Service Diagnosis
4.2
Indoor Unit PCB Abnormality
remote control
Display
A1
Method of
Malfunction
Detection
Evaluation of zero-cross detection of power supply by indoor unit.
Malfunction
Decision
Conditions
When there is no zero-cross detection in approximately 10 continuous seconds.
Supposed
Causes
Faulty indoor unit PCB
Faulty connector connection
Troubleshooting
Note:
Connector Nos. vary depending on models.
Connector connection check
(note).
YE
S
I
s
it norm
a
l?
NO
Correct connection
s
.
Repl
a
ce PCB
s
.
(R1400)
Caution
Be
su
re to t
u
rn off power
s
witch
b
efore connect or di
s
connect connector,
or p
a
rt
s
d
a
m
a
ge m
a
y
b
e occ
u
rred.
Model Type
Connector No.
Wall Mounted Type 50 / 60 / 71 class Terminal strip~Control PCB (indoor unit)
Summary of Contents for SiEN04-306D
Page 109: ...Instruction SiEN04 306D 100 System Configuration...
Page 199: ...Outdoor Unit SiEN04 306D 190 Removal Procedure...
Page 203: ...Others SiEN04 306D 194 Others...
Page 214: ...SiEN04 306D Wiring Diagrams Appendix 205 FTKD18 24 28BVMS...
Page 216: ...SiEN04 306D Wiring Diagrams Appendix 207 RKD18 24 28BVMS...