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SiEN18-622
Troubleshooting for SkyAir Indoor Unit
Troubleshooting
337
5.4
Indoor Unit Fan Motor Lock
Remote Control
Display
A6
Applicable
Models
FHQ
Method of
Malfunction
Detection
Detection by failure of signal for detecting number of turns to come from the fan motor
Malfunction
Decision
Conditions
When number of turns can’t be detected even when output voltage to the fan is maximum
Supposed
Causes
Failure of indoor unit fan motor
Broken or disconnected wire
Failure of contact
Failure of indoor unit PCB
Troubleshooting
(Q041
3
)
YE
S
YE
S
NO
NO
Are
X20A
a
nd
X26A properly
connected?
With
X26A
u
npl
u
gged
a
nd the power
su
pply
t
u
rned on, i
s
there
ab
o
u
t 12
VDC
b
etween pin
s
1
a
nd
3
of
X26A?
Connect correctly.
Indoor
u
nit PCB
repl
a
cement
Check indoor
u
nit f
a
n
motor
a
nd motor wiring.
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.
Summary of Contents for FTKS50BVMB
Page 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Page 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Page 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Page 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Page 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Page 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Page 452: ...SiEN18 622 vi Index ...