Hitachi RPC-2.0FSR - Page 79

CONTROL SYSTEM
TCI-20007-rev.1
1-69
n
Prevention Control for High Pressure Increase during Cooling Operation
 Thisfunctionisperformedtopreventtheabnormalcondition(AlarmCode:02)whentheairowvolume
decreases due to a seasonal wind against air outlet of the outdoor unit. When the following conditions are
met, the forced Thermo-OFF operation will be performed.
Thecauseofstoppagewillbe“13”duringThermo-OFF.
(1)
Y52C
isturned“ON”duringthecoolingoperation,or
RY1
isturned“ON”(duringthecompressor
operation).
(2) High Pressure > 3.8MPa