Daikin RQYQ140-180PY1 Service Manual page 58

Detailed Control Functions
[In heating operation and Simultaneous Cooling / Heating Operation]
★
The following control is performed in the system.
Pe_min indicates the minimum value within the system.
Pe_min
< 0.17 MPa
Compressor system:
2 step down / 10 sec.
Pe_min
> 0.27 MPa
Compressor system:
2 step up / 15 sec.
49
Normal Operation
&
&
Pe_min
< 0.17 MPa
Compressor system: Step 1
Pe < 0.07 MPa
Restart standby
(3 times per 60 min. at max.)
• Pe_min>0.23MPa
&
• Upper limit compressor step=max (Max. step)
• Pe_min > 0.20 MPa
• After 15 sec.
• Pe_min < 0.17 MPa
• After 10 sec.
Pe_min < 0.13 MPa
Stop due to malfunction
(E4 displayed)
SiBE341001
Compressor system:
1 step up / 15 sec.
Restart standby
(4 times per 60 min. at max.)
Function