Daikin VRV S RXQ4/5ARV1 - Protection Control

SiAF332111E Control for 4/5/10/12 HP Outdoor Unit
Part 4 Functions and Control 63
1.4 Protection Control
1.4.1 High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due
to abnormal increase of high pressure and to protect compressors against transient increase in
high pressure.
Cooling operation
Pc > 3.47 MPaAfter 10 seconds
Pc
> 3.47 MPa
Pc
< 3.23 MPa
Pc > 3.64 MPa
Current step maintained
After 15 seconds
High pressure not limited
High pressure limited
Pc: High pressure sensor detection value
Compressor upper limit
frequency: 3-step down from
current compressor frequency
When occurring 10 times within 60
minutes, high pressure switch is activated
without high pressure standby, thus
outputting the error code E3.
Compressor upper limit frequency: Maximum
High pressure
standby
Compressor upper limit
frequency: 1-step up from
current compressor frequency