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Control for 6/8 HP Outdoor Unit
SiAF332111E
74
Part 4 Functions and Control
Note(s)
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:
Compressor(s) OFF: fully closed (0 pulse).
Compressor ON:
Fully open (480 pulses)
Normally, the control is used to reduce the PCB temperature.
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.
Table shown above is for external static pressure level 0. In case of high external static
pressure, the unit will re-adjust fan revolutions automatically and values may differ.
When capacity priority mode is set, values may differ.
Compressor
Main
Y1E
0 Hz
0
480
pulses
Step No.
Fan revolutions (rpm)
RXMQ6AR
RXMQ8AR
0
0
0
1
200
440
2
250
440
3
300
440
4
360
440
5
420
480
6
490
550
7Y
560
650
7X
630
830
8
700
960*
Содержание VRV S RXMQ10ARY1
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