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SiEN18-622
Basic Control
Function
97
Δ
D Control
Receiving the capacity request signal from the indoor unit, the outdoor unit corrects its target
pressure for capacity control.
Controls
Δ
D signal from indoor unit as follows.
UP control :
When the UP command come from more than one indoor unit among
thermostat-ON indoor units.
Down control: When the down command come from all indoor units among thermostat-ON
indoor units.
Keep control:
Except for the above
About detail of
Δ
D signal, refer to P114
Cooling Operation
TeS = TeS initial value + KTe2
KTe2 : Correction value by
Δ
D signal in cooling.
Δ
D control
Keep the current KTe2
KTe2 = KTe2 – 0.5
KTe2 = KTe2 + 0.5
(Q0
3
96)
KTe2 = 0
(without correction)
Not during compressor frequency PI
control
During compressor frequency PI
control (KTe2 = 0)
Up control by
Δ
D signal
continues 120 sec.
Down control by
Δ
D signal
continues 120 sec.
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 ...