Hitachi UTOPIA RAS-4HVRP2E - Leds Indication; General Check; General Notes

4 Electrical and control settings
General notes
SMGB0136 rev.0 - 07/2021
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4.1 General notes
! DANGER
• DonotconnectofadjustanywiringorconnectionsunlessthemainpowerswitchisOFF.
• Useanearthleakagebreakerwithmediumsensitivity,andanactivationspeedof0.1secorless.Ifthisisnottted,thereis
ariskofelectricshockand/orre.
• Installanearthleakagebreaker,fuseandcircuitbreakerforeachoutdoorunitpowerline.Notttingitmaycauseanelectric
shockorre.
• Neverconnecttheearthcabletotherefrigerantpipes.Firecanmayoccur.
• Donotconnecttheearthcabletothelightingarrestsystem.Theelectricalpotentialofearthwouldincreaseabnormally.
! CAUTION
• Beforeanyelectricalwiringworkorregularinspections,switchoffthemainpowersupplyswitchesoftheindoorandoutdoorunits.
Waitthreeminutesbeforestartinginstallationormaintenancework.
• Makesurethattheindoorandoutdoorarecompletelystoppedbeforestartingworkontheelectricalwiringorregularinspections.
• Protectcables,drainhose,electricparts,etc.fromrodentsandinsects;otherwisethesemightdamageunprotectedcomponentsand,
intheworstcase,causeare.
• Wraptheaccessorypackingaroundthewires,andplugthewiringconnectionholewiththesealmaterialtoprotecttheproductfrom
anycondensedwaterandinsects.
• Donotallowcablestocomeintocontactwiththerefrigerantpipes,metaledges,printedcircuitboards(PCB)ortheelectricpartsinside
theunit;thecablesmaybedamagedand,intheworstcase,causeare.
• Tightlysecurethewireswiththecordclampinsidetheindoorunit.
• Leadthewiresthroughtheknockoutholeinthesidecoverwhenusingconduit.
• Securethecableoftheremotecontrolswitchwiththecordclampinsidetheelectricalbox.
• Electricalwiringmustcomplywithnationalandlocalcodes.Contactyourlocalauthorityinregardstostandards,rules,regulations,etc.
? NOTE
• Usetwistpairwire(morethan0.75mm²)foroperationwiringbetweenoutdoorunitandindoorunit,andoperationwiringbetween
indoorunitandindoorunit.(Donotusewirewithmorethan3cores).
• H-LINKtwistpairshieldedcablemustbegroundedintheoutdoorunitside.
• Useshieldedwiresforintermediatewiringtoprotecttheunitsfromnoiseobstacleatlengthoflessthan300mandsizecompliedwith
localcode.
4.1.1 General check
1 Ensure that the eld-supplied electrical components (mains power switches, circuit breakers, wires, connectors and
wire terminals) have been properly selected according to the electrical data indicated. Make sure that they comply
with national and regional electrical codes.
2 Check to ensure that the power supply voltage is within +/-10% of the rated voltage.
3 Check to ensure that power supply has an impedance low enough to warranty not reduce the starting voltage more
than 85% of the rated voltage.
4 Check to ensure that the ground wire is connected.
5 Ensure that fuse or circuit breaker are of specied capacity.
4.1.2 LED’s indication
LED Indication
LED1 Green Power Indication
LED2 Red Power Indication
LED3 Red Heat pump operation (thermo ON/OFF)
LED4 Yellow Alarm (ickering with 1 sec interval)
LED5 Green Not used
LED6 Yellow H-LINK transmission
LED7 Yellow H-LINK RCS transmission