SiENBE18-621
Protection Control
Function
73
4. Protection Control
4.1
High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due
to abnormal increase of high pressure and to protect compressors against the transient
increase of high pressure.
[In cooling operation]
[In heating operation]
Pc>
3
.47MP
a
After 10
s
ec.
Pc>
3
.47MP
a
Pc<
3
.2
3
MP
a
Pc>
3
.64MP
a
Keeping the c
u
rrent
s
tep
After 15
s
ec.
High pre
ssu
re not limited
High pre
ssu
re limited
INV
u
pper limit fre
qu
ency :
1-
s
tep
u
p from c
u
rrent
compre
ss
or fre
qu
ency
Pc: HP pre
ssu
re
s
en
s
or detection v
a
l
u
e
INV
u
pper limit fre
qu
ency :
3
-
s
tep down from c
u
rrent
compre
ss
or fre
qu
ency
When occ
u
rring 10 time
s
within 60
min
u
te
s
, HP
S
i
s
a
ctiv
a
ted witho
u
t high
pre
ssu
re
s
t
a
nd
b
y, th
us
o
u
tp
u
tting the
m
a
lf
u
nction code "E
3
".
High pre
ssu
re
s
t
a
nd
b
y
INV
u
pper limit fre
qu
ency=M
a
x
High-pre
ssu
re drop
Pc>
3
.04MP
a
After 10
s
ec.
Pc>
3
.04MP
a
Pc<2.94MP
a
Pc>
3
.64MP
a
Keeping the c
u
rrent
s
tep
After 60
s
ec.
High pre
ssu
re not limited
High pre
ssu
re limited
INV
u
pper limit fre
qu
ency :
1-
s
tep
u
p from c
u
rrent
compre
ss
or fre
qu
ency
Pc: HP pre
ssu
re
s
en
s
or detection v
a
l
u
e
INV
u
pper limit fre
qu
ency :
1-
s
tep down from c
u
rrent
compre
ss
or fre
qu
ency
When occ
u
rring 10 time
s
within 60
min
u
te
s
, HP
S
i
s
a
ctiv
a
ted witho
u
t high
pre
ssu
re
s
t
a
nd
b
y, th
us
o
u
tp
u
tting the
m
a
lf
u
nction code "E
3
".
High pre
ssu
re
s
t
a
nd
b
y
Pc<2.
8
9MP
a
Summary of Contents for BPMKS967B2B
Page 1: ...SiENBE18 621 E Series Service Manual Applied Models Super Multi Plus Heat Pump...
Page 12: ...SiENBE18 621 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 19: ...List of Functions SiENBE18 621 8 List of Functions...
Page 33: ...Specifications SiENBE18 621 22 Specifications...
Page 69: ...Refrigerant Flow for Each Operation Mode SiENBE18 621 58 Refrigerant Circuit...
Page 121: ...Indoor Unit SkyAir Models SiENBE18 621 110 Function...
Page 169: ...Instruction SiENBE18 621 158 System Configuration FTXS 20 25 35C Indoor Unit...
Page 371: ...Method of Replacing The Inverter s Power Transistors Modules SiENBE18 621 360 Troubleshooting...
Page 393: ...SiENBE18 621 vi Index...