Defrost Operation Control - Hitachi RAS-2-HVNP Service Manual

5. Control System
5.4.5 Defrost operation control
135
SMGB0079 rev.0 - 01/2013
RAS-(2-2.5)HVNP / RAS-3HVNC
After 30
seconds
Other than above
IU
<90Hz
demand
frequency
90Hz
Power to
YH2:ON
Power to
YH2:ON
* DSW2-1 ON (and DSW2-2ON for RAS-2.5HVNP)
After 90
seconds *
N
Power to
YH2:OFF
5