204
Outdoor Unit
Function
1.1 Normal operation
1.2 Compressor control
Fuzzy control : Maintain evaporating temperature(Te) on constant state on cooling mode and condensing
temperature(Tc) on constant stage on heating mode by Fuzzy control to ensure the stable system perfor-
mance.
1.3 Main and sub unit's LEV control
(1) Main LEV's fuzzy control
Main LEV operates with fuzzy control rules to keep the evaporator outlet super Heat(Superheat) stable
state during heating mode
Superheat = Tsuction - Tevaporation
Tsuction : temperature at suction pipe sensor(˚C)
Tevaporation : evaporation temperature equivalent to low pressure(˚C)
(2) Sub LEV's fuzzy control
Sub LEV operates with the same rules of main LEV, but the operating range is Limited by main LEV's
current opening rate
- Limited conditions : liquid back control, discharge temperature control etc.
1. Basic control
Compressor
Fan
Main LEV
4 way valve
Subcooling
LEV
Fuzzy control
Fuzzy control
Full open
Off
Fuzzy control
Fuzzy control
Fuzzy control
Fuzzy control
On
min.
Cooling operation
Heating operation
Actuator
stop
stop
After 15min,
min. pulse
After 15min, Off
After 15min,
min. pulse
Stop state
Summary of Contents for multi V PLUS
Page 21: ...Service Manual 21 Indoor Unit Indoor Units ...
Page 74: ...74 Indoor Unit ...
Page 86: ...86 Indoor Unit ...
Page 142: ...142 Indoor Unit ...
Page 160: ...160 Indoor Unit ...
Page 179: ...Service Manual 179 Outdoor unit ...
Page 239: ...Service Manual 239 Wiring Diagrams 5 8 60Hz 220V Main Outdoor Unit 8HP 10HP 12HP ...
Page 245: ...Service Manual 245 Trouble shooting guide ...
Page 296: ...296 Trouble Shooting Guide ...
Page 297: ...Service Manual 297 Appendix ...
Page 303: ...Service Manual 303 Exploded View Replacement Parts List ...