Hitachi YUTAKI Series - Page 150

Controller pack
Service Manual
148
Safety and control device setting
SMGB0066 rev.0 - 12/2009
Compressor Frequency 30 Hz
Output (Order Frequency)
Start Expansion Valve
Startup Control I
(Cold Start Opening)
Shift to Expansion Valve
Startup Control II
Shift to Fan Revolution Control
ReleaseDefrostingControl*
4-way valve switching
YDEF OFF
Fan: 25-step Operation (Full-speed)
10 Sec Count
50 Sec Count
Defrosting Finish
ConditionsFullled
Pd≤2.3MPa?
10 sec passed from
fan25-step?
Yes
Yes
No
No
<Defrosting Finish>