5. Control System
143
SMGB0079 rev.0 - 01/2013
5
5.5.6 Prevention control for high pressure increase
This function is performed to prevent the abnormal condition (Alarm: 02) when the outdoor air ow is decreased by a sea-
sonal wind against air outlet.
When the CMC is ON during cooling operation, PSC is ON and Tc is higher than Tc1+4 °C, forced thermo-off operation
will be performed.
Tc: Outdoor piping temperature.
Tc1: Outdoor piping temperature when PSC is ON.
PSC ON: 3.60 MPa.
However, if it occurs more than 6 times during operation, forced thermo-off operation will not be performed. Cause of stop-
page will be 13.
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