Hitachi YUTAKI Series - Minutes Guard Control; Power Save Mode

Available Optional
functions
Service Manual
154
Power save mode
SMGB0066 rev.0 - 12/2009

Compressorstartupbythermorecoveryshallalwaystoensure3minutesofcompressorOFFstatus.However,thestandard
uponoperationstartupis3minutesbutitcanbe,changedbythesettingmodeinthefollowingchart.Thetimeavailablefor
settingis30seconds,andby1minutebetween1and10minutes.
This mode is activated by turning pin 3 of DSW1 to ON.
Pressing PSW2 and PSW1 for more than three seconds at the same time allows changing from each item displayed. To
nishchangingtopredeterminedsetting.
The chart of setting operation is shown below.
PSW1
PSW1
PSW1 PSW1
PSW1
PSW1
PSW2
PSW2
PSW2
PSW2
PSW2 PSW2
PSW1
PSW2
PSW1: Valve up
PSW2: Valve down

Whenpowersavemodeisselectedwith“DSW4-6”ON,thefrequencyupperlimitforeachHPchangesfrom“Standard”-->
“PowerSaver”(i.e.,frequencyupperlimitlowersby10%).
Thismodeonlychangesthefrequencyupperlimitofthecompressor,anddoesnotaffecttoothercongurations.
DSW ON/OFF determination is performed only immediately after the Power activation.