Daikin RXYQ96PYDN Service Manual page 81

Protection Control
[In heating operation]
Pe_min<24.65psi
(See *1)
*1: Pe_min represents a minimum low pressure value detected within the system.
*2: For compressor steps, refer to information on page 45.
66
For multi-outdoor-unit systems, the entire system performs this control in the following
sequence.
Compressor system (See *2):
2-step down per 10 sec.
Pe_min Pe_min
>39.15psi <24.65psi
Compressor system (See *2):
2-step up per 15 sec.
Pe<10.15psi
Restart standby
(up to 3 times within a
period of 60 min.)
Normal operation
• Pe_min>29psi
&
• A lapse of 15 sec.
• Pe_min<24.65psi
&
• A lapse of 10 sec.
Pe_min<18.85psi
Compressor system (See *2):
Step 1
• Pe_min>33.35psi
&
• Compressor step=M
Compressor system (See *2):
1-step up per 15 sec.
Restart standby
occurs four times within a
period of 60 min.
Stop due to malfunction
[E4] is displayed.)
VRVIII R-410A Heat Pump 60Hz
SiUS34-801A_b