Daikin E-Series Service Manual page 92

SiAU18-715
∆D Control
Receiving the capacity request signal from the indoor unit, the outdoor unit corrects its target
pressure for capacity control.
Controls ∆ D signal from indoor unit as follows.
UP control :
Down control : When the down command come from all indoor units among thermostat-ON
Keep control : Except for the above
About detail of ∆ D signal, refer to P96
Cooling Operation
TeS = TeS initial value + KTe2
KTe2 : Correction value by ∆ D signal in cooling.
Function
When the UP command come from more than one indoor unit among
thermostat-ON indoor units.
indoor units.
During compressor frequency PI
control (KTe2 = 0)
∆ D control
KTe2 = KTe2 0.5
Up control by ∆ D signal
continues 120 sec.
KTe2 = 0
(without correction)
Not during compressor frequency PI
control
Keep the current KTe2
Down control by ∆ D signal
continues 120 sec.
Basic Control
KTe2 = KTe2 + 0.5
(Q0396)
79