Daikin VRV III REYQ8PY1 Service Manual page 136

Si37-701
[Heating Operation and Simultaneous Cooling / Heating Operation]
★
Pc_max>3.31MPa
When high
pressure is limited
Function
The following control is performed in the entire system.
Pc_max indicates the maximum value within the system.
Normal Operation
Compressor step:
7 STEP down
Pc_max
After 10 sec.
>3.42MPa
&
Pc_max>3.31MPa
Set the compressor
step to STEP 1
Pc_max>3.64MPa
High pressure
standby
Pc_max<2.94MPa
When occurring 3 times within
30 min., HPS is activated without high
pressure standby, thus outputting the
malfunction code "E3" .
Protection Control
125