[
VI
Refrigerant Circuit ]
- 84 -
HWE10130
GB
Sole-
noid
valve
SV1a, SV1b
Discharge-suc-
tion
bypass
1) High/low pressure bypass at
start-up and stopping, and
capacity control during low-
load operation
2) High-pressure-rise preven-
tion
AC220-240V
Open while being powered/
closed while not being pow-
ered
Continuity
check with a
tester
SV3
(Controls the
refrigerant flow
in the plate heat
exchanger.)
(1) Controls the refrigerant flow
while cleaning the piping sys-
tem in the heating mode.
(2) Prevents the high pressure
from rising too high during
heating operation.
SV5b
Heat
exchanger
capacity control
Controls outdoor unit heat ex-
changer capacity
SV8
(Controls the
refrigerant flow
during automat-
ic refrigerant
charging opera-
tion.)
Opens or closes as necessary
during automatic refrigerant
charging operation.
SV9
Allow refrigerant to bypass when
starting up in the heating mode at
low ambient pressure or when re-
suming normal operation after the
completion of defrost.
Open while being powered/
closed while not being pow-
ered
Linear
expan-
sion
valve
LEV1
(SC control)
Adjusts the amount of bypass flow
from the liquid pipe on the outdoor
unit during cooling
DC12V
Opening of a valve driven by a
stepping motor 0-480 pulses
(direct driven type)
Same as in-
door LEV
The resistance
value differs
from that of the
indoor LEV.
(Refer to the
section "LEV
Troubleshoot-
ing.")
(page 228)
SLEV
(Refrigerant oil
return)
Controls the amount of refrigerant
oil that returns to the compressor
from the accumulator.
LEV2a
LEV2b
(Controls the
intermediate
pressure.)
Keeps the intermediate pressure
within a specific range during cool-
ing.
DC12V
Opening of a valve driven by a
stepping motor 1400 pulses
Same as in-
door LEV
Heater
CH11
Heats the refrigerant in the com-
pressor
Cord heater AC230V
RP200 model
1511 ohm 35W
RP250 - RP350 models
1176 ohm 45W
Resistance
check
4-way
valve
21S4a
Changeover between heating and
cooling
AC220-240V
Dead: cooling cycle
Live: heating cycle
Continuity
check with a
tester
21S4b 1)
Changeover
between
heating
and cooling
2) Controls outdoor unit heat ex-
changer capacity
AC220-240V
Dead: cooling cycle
Outdoor unit heat exchanger
capacity at 100%
Live: heating cycle
Outdoor unit heat exchanger
capacity at 50%
or heating cycle
Part
name
Symbols
(functions)
Notes
Usage
Specifications
Check method
Содержание PUHY-RP200
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Страница 21: ... 12 I Read Before Servicing GB HWE10130 ...
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Страница 63: ... 54 II Restrictions GB HWE10130 ...
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Страница 83: ... 74 IV Remote Controller GB HWE10130 ...
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Страница 88: ... 79 HWE10130 GB VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 81 2 Principal Parts and Functions 82 ...
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Страница 95: ... VI Refrigerant Circuit 86 HWE10130 GB ...
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Страница 121: ... 112 VII Control GB HWE10130 ...
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Страница 259: ... 250 IX Troubleshooting GB HWE10130 ...
Страница 260: ... 251 HWE10130 GB X LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 253 ...
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