SiEN18-622
Troubleshooting for Outdoor Unit
Troubleshooting
383
7.22 Malfunction of Transmission between Inverter and
Control PCB
Remote Control
Display
LC
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check the communication state between inverter PCB and control PCB by micro-computer.
Malfunction
Decision
Conditions
When the correct communication is not conducted in certain period.
Supposed
Causes
Malfunction of connection between the inverter microcomputer and outdoor control
microcomputer
Defect of outdoor unit PCB
Defect of noise filter
External factor (Noise etc.)
Troubleshooting
Caution
NO
YE
S
NO
YE
S
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.
The
microcomp
u
ter
monitor (green) on the
o
u
tdoor
u
nit PC
b
o
a
rd
(A1P) i
s
b
linking.
The volt
a
ge
b
etween red
a
nd white
of X1A on the inverter
u
nit i
s
the power
su
pply
volt
a
ge.
Repl
a
ce o
u
tdoor
u
nit PC
b
o
a
rd (A1P).
Repl
a
ce o
u
tdoor
u
nit PC
b
o
a
rd (A1P).
When the LC m
a
lf
u
nction
occ
u
r
a
g
a
in, repl
a
ce control
PC
b
o
a
rd.
Check the noi
s
e filter (A
3
P)
for di
s
connection,
a
nd
check the power
su
pply
wiring.
Содержание FTKS50BVMB
Страница 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Страница 30: ...SiEN18 622 Specifications 17 Part 2 Specifications 1 Specifications 18 1 1 Cooling Only 18 1 2 Heat Pump 34 ...
Страница 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Страница 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Страница 204: ...Instruction SiEN18 622 192 System Configuration FTK X S 50 60 71 F Indoor Unit 1 2 4 3 10 11 9 7 8 15 12 13 14 16 6 5 ...
Страница 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Страница 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Страница 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Страница 452: ...SiEN18 622 vi Index ...