Hitachi RPC-1.5FSR Technical Catalogue page 79

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 flow 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
operation).
(2) High Pressure > 3.8MPa
TCI-20007-rev.1
RY1 is turned "ON" (during the compressor
CONTROL SYSTEM
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