Daikin Sky Air R-407C Service Manual page 186

General Functionality
1
2
3
4
5
2–6
Ther- Wiring
Location
mistor symbol
3 Outdoor R2T
heat
exchanger
4 Outdoor R1T
air return
5 Discharge R3T
pipe com-
pressor
Mode Function
Cooling Optimise discharge temp. (cond. temp.)
Integral capacity calculation (to determine
freeze-up)
Heat- Optimise discharge temp. (evap. temp.)
ing
Defrost start/stop
Cooling Outdoor fan speed control
Start-up control expansion valve and outdoor
unit fan
Integral capacity calculation (to determine
freeze-up)
Heat- Integral capacity calculation (to determine
ing defrost)
Start-up control expansion valve and outdoor
unit fan
Cooling Cooling overload
Check refrigerant shortage/too much refrigerant
Expansion valve control
Heat- Heating overload
ing
Check refrigerant shortage/too much refrigerant
Expansion valve control
ESIE02–01
Part 2 – Functional Description