Daikin VRV S RXQ4/5ARV1 Service Manual page 80

Control for 6/8 HP Outdoor Unit
2.5.5 Electronic Expansion Valve Control
Electronic expansion valve Y1E
 Cooling: electronic expansion valve is used only at fully closed or fully open condition:
2.5.6 Step Control of Outdoor Fans
Used to control the revolutions of outdoor fans in the steps listed in table below, according to
condition changes.
* When the system detects that outdoor air temperature (Ta) reaches 41°C or more, the control
of fan revolutions will be changed to 1,060 rpm automatically.
Note(s)
 Table shown above is for external static pressure level 0. In case of high external static
 When capacity priority mode is set, values may differ.
74
 Compressor(s) OFF: fully closed (0 pulse).
 Compressor ON:
 Fully open (480 pulses)
 Normally, the control is used to reduce the PCB temperature.
Compressor
0 Hz
Main
480
Y1E
pulses
0
Step No.
0
1
2
3
4
5
6
7Y
7X
8
pressure, the unit will re-adjust fan revolutions automatically and values may differ.
Fan revolutions (rpm)
RXMQ6AR
0
200
250
300
360
420
490
560
630
700
SiAF332111E
RXMQ8AR
0
440
440
440
440
480
550
650
830
960*
Part 4 Functions and Control