Daikin FXSQ40P7VEB [104/370] Outdoor unit fan control

Daikin FXZQ50MVES [104/370] Outdoor unit fan control
Normal Operation SiBE311209
95 Function
6.4 Outdoor Unit Fan Control
6.4.1 Step Control of Outdoor Unit Fans
Used to control the revolutions of outdoor unit fans in the steps listed in table below, according to condition changes.
Figures listed above are all those controlled while in standard mode, which vary when the system is set to high static
pressure or capacity priority mode.
6.5 Control for Cooling Operation at Low Outdoor Air
Temperature
For cooling operation at low outdoor air temperature, this function is used to conduct high
pressure control on the outdoor unit fan to secure liquid pressure, thus providing an adequate
circulation airflow rate to the indoor unit.
STEP No.
Fan revolutions (rpm)
RTSQ8PA RTSQ10PA RTSQ12PA
RTSQ14PA RTSQ16PA
M1F M2F M1F M2F
00000000
1 350 350 350 230 0 395 0
2 370 370 370 380 0 460 0
3 400 400 400 290 260 570 0
4 450 460 460 375 345 385 355
5 540 560 560 570 540 550 520
6 670 680 680 720 690 800 770
7 760 821/800 870 1091 1061 1136 1106
8
796/780
(Cooling/
Heating)
821/800 870 1136 1106 1166 1136
Fan upper limit: Step 8
Pc < 2.75MPa Pc > 3.24MPa
Outdoor unit fan upper limit revolutions
Step 7
For fan revolutions in each step,
refer to information above.
PI control
Outdoor unit fan:
Decreased by 1 step
A lapse of 20 sec.
PI control
Current fan step
maintained
PI control
A lapse of 20 sec.
Outdoor unit fan:
Increased by 1 step

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