Mitsubishi Electric CITY MULTI PQRY-P200YMF-C Service Handbook page 53

(7) Control of heat source unit fan and heat source unit heat exchanger capacity
1) Control system
Depending on capacity required, control SV3~6, SV71~73, for maintaining evaporation temperature (0˚C) in cooling
operations, and high pressure saturated temperature (52˚C) in heating operations.
2) Heat exchanger pattern
Mode
SV3
Cooling-only
×
×
×
Cooling-main
×
×
×
×
×
×
×
Heating-only
×
Heating-main
×
Heat Exchanger Switching
SV4 SV5 SV6
×
×
× ×
× × ×
× × ×
× ×
× ×
× × ×
×
×
×
× ×
× ×
× × ×
× × ×
× ×
× ×
× ×
×
× × ×
× × ×
× ×
× ×
×
× ×
×
× ×
× ×
× ×
×
× ×
×
× ×
× ×
× ×
SV71 SV72
×
× ×
× ×
× ×
×
× ×
×
× ×
×
×
× ×
×
× ×
×
× ×
× ×
×
× ×
× ×
×
× ×
×
× ×
× ×
×
×
×
×
×
× ×
× ×
×
×
×
×
×
–52–
Remarks
SV73
×
×
×
×
×
8 HP only
×
10 HP only
×
10 HP only
×
×
×
×
×
8 HP only
×
×
×
×
8 HP only
×
10 HP only
×
10 HP only
×
10 HP only
×
×
×
×
10 HP only
10 HP only