Daikin RQYQ16PY1 [51/194] Protection control

Daikin RQYQ8PY1 [51/194] Protection control
Si341009 Detailed Control Functions
Function 42
2.5 Protection Control
2.5.1 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 the transient increase of high pressure.
[In cooling]
In case of multi-outdoor-unit system, each outdoor unit performs this control individually in the following sequence.
[In heating]
In case of multi-outdoor-unit system, the following control is performed in the entire system.
&
Normal operation
Compressor step = Max. stepPc > 3.47 MPa
(Without preconditions)
(Without preconditions)
Current step maintained
STD compressor 2: OFF
STD compressor 1: OFF
INV. compressor: 52 Hz
Pc > 3.64 MPa
Restart standby
(2 times per 30 minutes at max.)
Stop due to malfunction
(“E3” displayed)
HPS (4.0 MPa) is activated
INV. compressor
3 step down
INV. compressor
1 step up
•Pc > 3.47 MPa
•After 10 seconds
&
•Pc < 3.24 MPa
•After 15 seconds
&
•Pc > 3.55 MPa
•After 10 seconds
&
•Pc > 3.55 MPa
•After 10 seconds
&
•Pc > 3.55 MPa
•After 10 seconds
Pc: High pressure sensor detection
value for each outdoor unit
Normal operation
Pc > 2.94 MPa
Pc > 3.04 MPa
Pc > 3.20 MPa
Compressor system
Master unit: 52 Hz + OFF + OFF
Slave unit: ALL unit stop
Compressor system
Master: 52 Hz + OFF + OFF
Slave: ALL unit stop
Pc < 2.75 MPa
Compressor system
7 step down / 10 seconds
Restart standby
(2 times per 30 minutes at max.)
Stop due to malfunction
(“E3” displayed)
HPS (4.0 MPa) is activated
Pc < 2.69
MPa
OR
•Mater Tdi > 112˚C
•Pc > 2.89 MPa
•Mater Tdi < 107˚C
•Pc < 2.69 MPa
Pc: High pressure sensor detection value for master unit
Tdi: Value of INV. compressor discharge pipe temperature

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Hi, good afternoon.
1 год назад