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Protection Control
SiEN18-622
110
Function
4.4
Inverter Protection Control
Inverter current protection control and inverter fin temperature control are performed to prevent
tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase.
[Inverter overcurrent protection control]
[Inverter fin temperature control]
Not limited
Limited
Inverter c
u
rrent >2
3
.
8
A
Inverter c
u
rrent
Inverter c
u
rrent
≥
24.9A contin
u
e
s
for 260
s
ec.
>2
3
.
8
A
•
Inverter c
u
rrent
≤
2
3
.
8
A
•
INV
u
pper limit fre
qu
ency=m
a
x Hz
&
•
10
s
ec.
•
M
a
tching of fre
qu
ency
&
•
INV
u
pper limit fre
qu
ency:
1-
s
tep down from c
u
rrent
compre
ss
or fre
qu
ency
INV
u
pper limit fre
qu
ency:
1-
s
tep
u
p from c
u
rrent
compre
ss
or fre
qu
ency
Inverter c
u
rrent
s
t
a
nd
b
y
Inverter c
u
rrent
≤
2
3
.
8
A
contin
u
e
s
for
3
min.
S
t
a
t
us qu
o
Witho
u
t condition
s
When occ
u
rring 4 time
s
within 60 min.,
the m
a
lf
u
nction code "L
8
" i
s
o
u
tp
u
t.
Not limited
Limited
Tfin
≥
7
8
°C
Tfin
≥
7
8
°C
•Tfin
<
75°C
Tfin
≥
83
°C
Fin temp.
s
t
a
nd
b
y
•INV
u
pper limit fre
qu
ency=m
a
x Hz
&
•
INV
u
pper limit fre
qu
ency:
1-
s
tep down from c
u
rrent
compre
ss
or fre
qu
ency
•10
s
ec.
•M
a
tching of fre
qu
ency
&
Tfin
≤
75°C
contin
u
e
s
for
3
min.
INV
u
pper limit fre
qu
ency:
1-
s
tep
u
p from c
u
rrent
compre
ss
or fre
qu
ency
S
t
a
t
us qu
o
Witho
u
t condition
s
When occ
u
rring 4 time
s
within 60 min.,
the m
a
lf
u
nction code "L4" i
s
o
u
tp
u
t.
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 ...