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SiE12-411
Troubleshooting
Service Diagnosis
169
5.3
Indoor Unit PCB Abnormality
Remote
Controller
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.
Control connector
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
Wall Mounted Type 50 / 60 / 71 class Terminal strip~Control PCB
Duct Connected Type
Terminal strip~Control PCB
Floor / Ceiling Suspended Dual Type S37
Floor Standing Type
Control PCB : S7, S201, S203
Power Supply PCB : S8, S202, S204
Summary of Contents for Super Multi NX C-Series
Page 6: ...SiE12 411 Table of Contents v Index i Drawings Flow Charts v...
Page 7: ...SiE12 411 vi Table of Contents...
Page 67: ...Specifications SiE12 411 56 Specifications...
Page 171: ...Instruction SiE12 411 160 System Configuration...
Page 225: ...Check SiE12 411 214 Service Diagnosis...
Page 295: ...SiE12 411 iv Index...