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Basic Control
SiEN18-622
100
Function
2.4
Cooling Operation Fan Control
In cooling operation with low outdoor air temperature, this control is used to provide the
adequate amount of circulation air with liquid pressure secured by high pressure control using
outdoor unit fan.
Furthermore, when outdoor temperature
≥
20°C, the compressor will run in Step 7 or higher.
When outdoor temperature
≥
18°C, it will run in Step 5 or higher.
When outdoor temperature
≥
12°C, it will run in Step 1 or higher.
8
50 rpm
715 rpm
5
8
0 rpm
445 rpm
3
60 rpm
2
8
5 rpm
400 rpm
250 rpm
0 rpm
M1F
8
15 rpm
6
8
0 rpm
545 rpm
410 rpm
3
25 rpm
250 rpm
0 rpm
0 rpm
0 rpm
M2F
S
TEP
3
S
TEP4
S
TEP5
S
TEP6
S
TEP7
S
TEP
8
S
TEP2
S
TEP1
S
TEP0
Cooling
F
a
n
S
tep
s
Upper limit of f
a
n
revol
u
tion
s
:
S
tep
8
Upper limit of o
u
tdoor
u
nit
f
a
n revol
u
tion
s
S
tep 7
-1
s
tep on
o
u
tdoor
u
nit f
a
n
+1
s
tep on
o
u
tdoor
u
nit f
a
n
Pc
<2.75MP
a
PI control
Pc
>
3
.24MP
a
L
a
p
s
e of 20
s
ec.
PI control
PI control
L
a
p
s
e of 20
s
ec.
Hold the
c
u
rrent
s
tep on
o
u
tdoor
u
nit f
a
n
Pc: HP pre
ssu
re
s
en
s
or detection v
a
l
u
e
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 ...