Hitachi RAS-25QH1 Technische Information Seite 119

FORCED COOLING
* The following shows the operation state of forced cooling.
In-rush
prevention
Power relay
TSKTM1 Balancing for 3 minutes
Compressor
rotation speed
Main microcomputer
PSTART TD control + AN correction + distribution control
'
1
L
'
'
'
2
{Outdoor temperature < 40°C |
Expansion vaive
PSTART
0
Service switch
i Unit 1
[unit |
Heating output
?
for heating
Outdoor fan
request
in-rush
prevention
ist
i H
2 ae
SS
———— aa
2 a
es
2 ee
eee
|_|
|_|
#
Ez
approx. 100 ms ~ T TSKTML
Compressor
rotation speed
Sub microcomputer
_,@62. Spps {Outdoor temperature < 40°C |
PSTART |
@lnitialization
finished
Expansion valve
PSTART
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