Startup Control
SiUS341615E
55
Functions and Control
4.2
Startup Control in Heating
Pc : High pressure sensor detection value
Pe : Low pressure sensor detection value
Ta : Outdoor air temperature
Te : Low pressure equivalent saturation temperature
0 Hz
0 Hz
+12 Hz/20 sec.
+12 Hz/20 sec.
A
B
C
D
E
A
0 pulse
Step 4
Step 8
OR
&
&
U
T(Ta–Te)control
A
Inverter compressor 1
(M1C)
Inverter compressor 2
(M2C)
Electronic expansion
valve (main)
(Y1E)
Inverter fan
M1F: RXYQ72TA
M1F + M2F: RXYQ96-168TA
∗
RXYQ144/168TA only
Frequency step up
5 sec. interval
Initial
opening
Pc – Pe > 0.78 MPa (113 psi)
Pc – Pe > 0.39 MPa (56.6 psi)
164 Hz or more
Pc – Pe > 0.17 MPa (24.7 psi)
RXYQ72TA
RXYQ144/168TA
52
74
90
120
164
A
B
C
D
E
Frequency
(Hz)
RXYQ96/120TA
60
75
90
120
180
DSH > 10˚C (18˚F)
Summary of Contents for RXYQ-TA Series
Page 1: ...Service Manual SiUS341615E RXYQ72 408TAYDU RXYQ72 408TATJU Heat Pump 60 Hz...
Page 321: ...SiUS341615E Wiring Diagrams Appendix 308 RXYQ96 120TAYDU 2D106439A...
Page 322: ...Wiring Diagrams SiUS341615E 309 Appendix RXYQ144 168TAYDU 2D106440A...
Page 323: ...SiUS341615E Wiring Diagrams Appendix 310 RXYQ72TATJU 3D106435A...
Page 324: ...Wiring Diagrams SiUS341615E 311 Appendix RXYQ96 120TATJU 2D106436A...
Page 325: ...SiUS341615E Wiring Diagrams Appendix 312 RXYQ144 168TATJU 2D106437A...
Page 335: ...SiUS341615E Wiring Diagrams Appendix 322 VAM1200GVJU 3D073270C...
Page 336: ...Revision History Month Year Version Revised contents 02 2017 SiUS341615E First edition...
