Hitachi RAS-4.0UFESNH1 - Drive Fault Code Analysis


Test run
Testrunshouldbeperformedafterrefrigerantpiping,drain,wiring,etc.havebeennished.
!
CAUTION
Theairconditionerisprovidedwithacrankcaseheater,checktoensurethattheswitchonthemainpowersourcehasbeenONfor
morethan6hoursaheadofpoweronpreheating,otherwiseitmightdamagethecompressor!
Donotoperatethesystemuntilallthecheckpointshavebeencleared.
a. Checktoensurethatthestopvalvesoftheoutdoorunitarefullyopened.
b. Checktoensurethattheelectricwireshavebeenfullyconnected.
c. Checktoensurethattheelectricalresistanceismorethan2MΩ,bymeasuringtheresistancebetweengroundandthe
terminaloftheelectricalparts.Ifnot,donotoperatethesystemuntiltheelectricalleakageisfound and repaired.
Test run function identication
Operate remote controller to turn ON the appliance, and then proceed test run.
Pay attention to the following items while the system is running.
Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the pipes at the discharge side
areheatedhigherthan90ºC.
• Turnoffthepoweraftertestrunisnished.
Installationoftheapplianceisgenerallynishedaftertheaboveoperationsaredone.Ifyoustillhaveanytrouble,pleasecontact
local technical service center of our company for further information.
INSTALLATIONINSTRUCTIONS
HO2019292HA
18