Midea MV6-i252WV2GN1-E, Руководство по обслуживанию

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V6-i VRF 50/60Hz
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Table 3-5.2: Component control during heating operation
Component
Wiring
diagram
label
8-12HP 14-18HP 20-24HP 26-28HP 30-32HP Control functions and states
Inverter compressor A COMP(A)
● ● ● ● ●
Controlled according to load requirement
Inverter compressor B COMP(B)
● ● ●
DC fan motor A FANA
● ● ● ● ●
Controlled according to outdoor ambient
temperature, outdoor heat exchanger pipe
temperature, discharge pressure and load
requirement
DC fan motor B FANB
● ● ●
Electronic expansion
valve A
EXVA
● ● ● ● ●
Position (steps) from 0 (fully closed) to 480
or 3000 (fully open), controlled according to
discharge superheat
Electronic expansion
valve C
EXVC
● ● ● ● ●
Position (steps) from 0 (fully closed) to 480
(fully open), controlled according to
temperature different between plate heat
exchanger inlet and outlet
Four-way valve ST1
● ● ● ● ●
On
Solenoid valve (oil
balance)
SV4
● ● ● ● ●
Open regularly
Solenoid valve (fast
defrosting (in cooling)
and
unloading (in
heating))
SV5
● ● ● ● ●
Controlled according to ambient
temperature, discharge pressure, discharge
temperature,
compressor running
frequency and discharge superheat
Solenoid valve (EXV
bypass)
SV6
● ● ● ● ●
Off
Solenoid valve (indoor
units bypass)
SV7
● ●
Controlled according to load requirement
Solenoid valve (inverter
compressor A vapor
injection)
SV8A
● ● ● ●
Controlled according to inverter compressor
A on/off
Solenoid valve (inverter
compressor B vapor
injection)
SV8B
● ●
Controlled according to inverter compressor
B on/off
Solenoid valve (inverter
compressor B pressure
balance)
SV9
● ● ●
Open before compressor B startup and close
after compressor B running for 15 seconds.
Open after compressor B stop 10 seconds
and keep open 60 seconds.