Daikin VRV IV-S RXTQ-TAVJU Series Service Manual page 58

Protection Control
Heating operation
Pc > 3.04 MPa (441 psi)
High pressure limited
Pc < 2.94 MPa (426 psi)
45
High pressure drop
High pressure not limited
Pc < 2.89 MPa (419 psi)
Compressor upper limit
frequency: 1-step down from
current compressor frequency
After 10 sec. Pc > 3.04 MPa (441 psi)
Current step maintained
After 60 sec.
Compressor upper limit
frequency: 1-step up from
current compressor frequency
Pc > 3.64 MPa (528 psi)
High pressure
standby
Pc: High pressure sensor detection value
When occurring 10 times within 60
minutes, high pressure switch is activated
without high pressure standby, thus
E3
outputting the error code
SiUS331604E
.
Functions and Control