Cooling Operation Fan Control - Daikin R410As Service Manual

Si39-302
2.4

Cooling Operation Fan Control

In cooling operation with low outdoor air temperature, this control is used to provide the
adequate amount of circulation air with liquid pressure secured by high pressure control using
outdoor unit fan.
Pc<2.8 MPa
Pc>3.1 MPa
Pc<1.8 MPa
Pc<1.8 MPa
Pc<1.8 MPa
Pc<1.8 MPa
Pc<1.8 MPa
Pc<1.8 MPa
Pc<2.3 MPa
Function
STEP9
Pc>3.3 MPa
STEP8
Pc>2.7 MPa
STEP7 Fan Steps
Pc>2.7 MPa
STEP6
Pc>2.7 MPa
STEP5
Pc>2.7 MPa
STEP4
Pc>2.7 MPa
STEP3
Pc>2.7 MPa
STEP2
Pc>2.7 MPa
STEP1
Pc: HP pressure sensor detection value
RXYQ5M
8 and 10M
STEP1 0rpm
STEP2 300rpm
STEP3 320rpm
STEP4 340rpm
STEP5 370rpm
STEP6 440rpm
STEP7 535rpm
STEP8 515rpm
STEP9 750rpm
Basic Control
RXYQ RXYQ
12 to 16M
0rpm 0rpm
300rpm 300rpm
320rpm 325rpm
345rpm 355rpm
385rpm 400rpm
465rpm 500rpm
575rpm 630rpm
785rpm 880rpm
825rpm 920rpm
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