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Operation Mode
SiEN18-622
94
Function
1. Operation Mode
•
•
Oil ret
u
rn oper
a
tion
Ye
s
Ye
s
No
No
M
a
lf
u
nction/
S
t
a
nd
b
y
Norm
a
l oper
a
tion
• Compre
ss
or PI control
•
• Protection control
Indoor
u
nit thermo
s
t
a
t ON
No
Ye
s
Defro
s
ting oper
a
tion
Indoor
u
nit thermo
s
t
a
t ON
Note:
M
a
lf
u
nction/
S
t
a
nd
b
y
(V
3
152)
Oper
a
tion in
s
top mode
Cooling or he
a
ting
oper
a
tion
Oil ret
u
rn IN
condition
s a
re met.
Defro
s
t IN
condition
s a
re met.
Oper
a
tion
mode ch
a
nge
Pre
ssu
re
e
qua
liz
a
tion
prior to
s
t
a
rt
u
p
S
t
a
rt
u
p control
Cooling
s
t
a
rt
u
p
control
He
a
ting
s
t
a
rt
u
p control
Electronic exp
a
n
s
ion
v
a
lve PI control
Indoor
u
nit
s
top or
thermo
s
t
a
t OFF
Indoor
u
nit
s
top or
thermo
s
t
a
t OFF
Indoor
u
nit
s
top or
thermo
s
t
a
t OFF
M
a
lf
u
nction/
S
t
a
nd
b
y
M
a
lf
u
nction/
S
t
a
nd
b
y
P
u
mp-down
re
s
id
ua
l
oper
a
tion
Re
s
t
a
rt
s
t
a
nd
b
y
(Compre
ss
or
s
top)
In the event indoor
u
nit
s
top
s
or the thermo
s
t
a
t
t
u
rn
s
OFF while in oil ret
u
rn oper
a
tion or
defro
s
ting oper
a
tion, p
u
mp-down re
s
id
ua
l
oper
a
tion i
s
performed on completion of the oil
ret
u
rn oper
a
tion or defro
s
ting oper
a
tion.
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 ...