Compressor Step Control; Step Control Of Outdoor Fans - Daikin RXQ12AHR Service Manual

Normal Operation
5.5

Compressor Step Control

 The actual rotation speed per second of the compressor (rps) depends on the type of
 The change of compressor capacity step corresponds to 1 rps / step.
 The control can skip an number of steps to reach faster the target saturation temperature.
5.6

Step Control of Outdoor Fans

Used to control the revolutions of outdoor fans in the steps listed in table below, according to
condition changes.
STEP
No.
RXQ6A
0 0
1 350
2 360
3 370
4 400
5 430
6 490
7Y 520
7X 550
8 565
Note(s)
Figures listed above are for standard mode. Values may differ when the system is set to high
static pressure mode or capacity priority mode.
86
compressor:
Actual rotation
Compressor speed
(rps)
JT1GUVDYR frequency/2
JT16KCVDYR frequency/3
RXQ8/10A RXQ12A
0 0
350 350
370 370
400 400
460 460
560 560
710 710
750 775
796 870
835 890
RXQ6/8A RXQ10-14A
M1C
– M1C
Fan revolutions (rpm)
RXQ14-18A
M1F M2F
0 0
380 0
470 0
570 0
380 380
550 520
865 665
940 910
1,055 1,025
1,097 1,067
SiAF341904E
Model name
RXQ16/18A
– M1C, M2C
–
RXQ20A
M1F
0
380
470
570
380
550
865
940
1,136
1,360
Part 4 Functions and Control
RXQ20A
M1C
M2C
M2F
0
0
0
0
380
520
665
910
1,106
1,180