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Control Specification
SiENBE04-512A
58
Function and Control
3.11 Electronic Expansion Valve Control
Outline
The following items are included in the electronic expansion valve control.
Electronic expansion valve is fully closed
1. Electronic expansion valve is fully closed when turning on the power.
2. Pressure equalizing control
Open Control
1. Electronic expansion valve control when starting operation
2. Control when frequency changed
3. Control for defrosting (only for heat pump model)
4. Control when a discharge pipe temperature is abnormally high
5. Control when the discharge pipe thermistor is disconnected
Feedback Control
1. Discharge pipe temperature control
Detail
The followings are the examples of control which function in each mode by the electronic
expansion valve control.
(R2
833
)
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
F
u
lly clo
s
ed when power i
s
t
u
rned ON
Open control when
s
t
a
rting
(Control of t
a
rget di
s
ch
a
rge pipe temper
a
t
u
re)
Pre
ssu
re e
qua
lizing control
Open control when
s
t
a
rting
(Control of t
a
rget di
s
ch
a
rge pipe temper
a
t
u
re)
(Defro
s
t control FD=1)
Pre
ssu
re e
qua
lizing control
Open control when
s
t
a
rting
Contin
u
e
Pre
ssu
re e
qua
lizing control
Control when fre
qu
ency ch
a
nged
Control f
or
ab
nor
m
a
lly high di
s
ch
a
rge
pipe temper
a
t
u
re
When power i
s
t
u
rned ON
Cooling oper
a
tion
S
top
He
a
ting oper
a
tion
S
top
He
a
ting oper
a
tion
Control of di
s
ch
a
rge pipe
thermi
s
tor di
s
connection
S
top
Oper
a
tion p
a
ttern
(only for he
a
t p
u
mp model)
(only for he
a
t
p
u
mp model)
: f
u
nction
×
: not f
u
nction
(only for he
a
t
p
u
mp model)
SiENBE04-512A.book Page 58 Friday, October 5, 2007 1:49 PM
Summary of Contents for ARKH20CVMB7
Page 1: ...SiENBE04 512A Service Manual Inverter Pair Wall Mounted Type C Series D Series ...
Page 17: ...List of Functions SiENBE04 512A 8 List of Functions ...
Page 37: ...Specifications SiENBE04 512A 28 Specifications ...
Page 73: ...Control Specification SiENBE04 512A 64 Function and Control ...
Page 103: ...Instruction SiENBE04 512A 94 System Configuration ...
Page 147: ...Check SiENBE04 512A 138 Service Diagnosis ...
Page 225: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 512A 216 Removal Procedure ...
Page 229: ...Others SiENBE04 512A 220 Others ...
Page 241: ...Wiring Diagrams SiENBE04 512A 232 Appendix ...