Hitachi RCUE40AG2 Service Manual page 75

Control system
Yes
if during fan operation, if during fan operation,
fan 0Hz order fan 0Hz order
Yes
No
pag. 73
Confi rmation of defrost
conditions
Fan 0 Hz order, Changeover
of 4 way valve
Capacity control hold
10 sec count
Water side HE inlet
refrigerant temp ≤ 0ºC ?
No
Water side HE inlet
refrigerant temp ≤2ºC ?
No
Capacity control hold
3 min from defrost? start?
Yes
Water side HE inlet
refrigerant temp ≤10ºC ?
Fan operation control?
High pressure ≥2.1MPa ?
Yes
Fan operation start
SMGB0003 rev.0-01/2007
Yes
Load-down output
(10sec output)
Yes
Load-up
continuous output
Yes
High pressure ≥2.4MPa ?
Yes
6 min from defrost? start?
Confi rmation of defrost
fi nish conditions
4 4
No
No