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Troubleshooting
SiENBE04-512A
102
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 20 / 25 / 35 class Terminal strip~Control PCB
SiENBE04-512A.book Page 102 Friday, October 5, 2007 1:49 PM
Summary of Contents for FTKS20CVMB(9)
Page 1: ...SiENBE04 512A Service Manual Inverter Pair Wall Mounted Type C Series D Series...
Page 17: ...List of Functions SiENBE04 512A 8 List of Functions...
Page 37: ...Specifications SiENBE04 512A 28 Specifications...
Page 73: ...Control Specification SiENBE04 512A 64 Function and Control...
Page 103: ...Instruction SiENBE04 512A 94 System Configuration...
Page 147: ...Check SiENBE04 512A 138 Service Diagnosis...
Page 225: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 512A 216 Removal Procedure...
Page 229: ...Others SiENBE04 512A 220 Others...
Page 241: ...Wiring Diagrams SiENBE04 512A 232 Appendix...