Daikin RXYQ96PYDN, Руководство по обслуживанию

Страница: 226 / 567

SiUS34-801A_b Protection Control
VRVIII R-410A Heat Recovery 60Hz 211
[Heating Operation and Simultaneous Cooling / Heating Operation]
The following control is performed in the entire system.
Pc_max indicates the maximum value within the system.
8.2 Low Pressure Protection Control
This low pressure protection control is used to protect compressors against the transient decrease
of low pressure.
[In cooling operation]
Because of common low pressure, the following control is performed in the system.
Pc_max<426.3psi
Pc_max
>495.9psi
Pc_max>479.95psi
Pc_max>479.95psi
&
Pc_max>527. 8 psi
W hen occ u rring 3 times w ithin
30 min., HPS is acti v ated w itho u t high
press u re stand b y, th u s o u tp u tting the
malf u nction code [ E3 ].
N ormal Operation
After 10 sec.
High press u re
stand b y
Compressor step:
7 STEP do
w n
Set the compressor
step to STEP 1
W hen high
press u re is limited