Hitachi RAS-(3-6)HVRNM2E Service Manual page 165

5 Control System
Outdoor fan control during cooling operation
No
155
SMGB0064 rev.0 - 08/2011
Operation
10 sec.
*1) Fan step at start
Pressure switch for
Yes
control: ON
No
Is fan operated more
than 3 min?.
Yes
Pipe surface temp. of
Yes
outdoor unit heat exchanger
< 30 ºC.
No
Pipe surface temp. of
Yes
outdoor unit heat exchanger
> 40 ºC.
No
Same step
Yes
Pressure switch for
control: ON
No
Is it continuous for
more than 3 min.?
Yes
Step up
Step up Step down
Step up
Is it continuous for
No
more than 1 min.?
Yes
5