Daikin VRV Series - Hot Air Can Be Felt When the Indoor Unit Is Stopped; Troubleshooting; System Does Not Operate at All; System Goes into Fan Only Operation, then Stops

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9.15 Hot air can be felt when the indoor
unit is stopped
• Severaldifferentindoorunitsarebeingrunon
thesamesystem.Whenanotherunitisrunning,
somerefrigerantwillstillowthroughtheunit.
10. Troubleshooting
Ifoneofthefollowingmalfunctionsoccur,takethe
measuresshownbelowandcontactyourdealer.
WARNING
Stopoperationandshutoffthepowerif
anythingunusualoccurs(burningsmellsetc.)
Leavingtheunitrunningundersuch
circumstancesmaycausebreakage,electric
shockorre.Contactyourdealer.
Thesystemmustberepairedbyaqualied
serviceperson:
• Ifasafetydevicesuchasafuse,abreakeror
anearthleakagebreakerfrequentlyactuatesor
theON/OFFswitchdoesnotproperlywork.
Measure:Tu r n offthemainpowerswitch.
• Ifwaterleaksfromtheunit.
Measure:Stoptheoperation.
• Theoperationswitchdoesnotworkwell.
Measure:Tu r n offthepower.
• Iftheuserinterfacedisplay“ ”indicates
theunitnumber,theoperationlampashesand
themalfunctioncodeappears.
Measure:Notifyyourinstallerandreportthe
malfunctioncode.
If the system does not properly operate except
for the above mentioned cases and none of the
above mentioned malfunctions is evident,
investigate the system according to the
following procedures. If it is impossible to x
the problem yourself after checking all the
above items, contact your dealer.
Let him know the symptoms, system name,
and model name (listed on the warranty card).
1 Ifthesystemdoesnotoperateatall:
• Checkifthereisnopowerfailure.
Waitunitpowerisrestored.Ifpowerfailure
occursduringoperation,thesystem
automaticallyrestartsimmediatelyafterthe
powersupplyisrecovered.
• Checkifnofusehasblownorbreakerhas
worked.Changethefuseorresetthe
breakerifnecessary.
Tu r n thepoweronwith
thebreakerswitchin
theoffposition.
Donotturnthepower
onwiththebreaker
switchinthetrip
position.
(Contactyourdealer.)
ON
OFF
Switch
Breaker
Tr i pposition
2 Ifthesystemgoesintofanonlyoperation,but
assoonasitgoesintocoolingoperation,the
systemstops:
• Checkifairinletoroutletofoutdooror
indoorunitisnotblockedbyobstacles.
Removeanyobstacleandmakeitwell-
ventilated.Checkiftheuserinterfacedisplay
shows
“ ” timetocleantheairlter).
Referto“theoperationmanualoftheindoor
unitandcleantheairlter”.
3 Thesystemoperatesbutcoolingorheatingis
insufcient:
• Checkifairinletoroutletofoutdooror
indoorunitisnotblockedbyobstacles.
• Removeanyobstacleandmakeitwell-
ventilated.
• Checkiftheairlterisnotclogged(referto
“Maintenance”intheindoorunitmanual).
• Checkthetemperaturesetting.
• Checkthefanspeedsettingonyouruser
interface.
• Checkforopendoorsorwindows.Shut
doorsandwindowstopreventwindfrom
comingin.
• Checkiftherearetoomanyoccupantsin
theroomduringcoolingoperation.Checkif
theheatsourceoftheroomisexcessive.
• Checkifdirectsunlightenterstheroom.
Usecurtainsorblinds.
• Checkiftheairowangleisproper.
Ifthecheckingallaboveitems,itisimpossibleto
xtheproblemyourself,contactyourinstallerand
statethesymptoms,thecompletemodelnameof
theairconditioner(withmanufacturingnumberif
possible)andtheinstallationdate(possiblylisted
onthewarrantycard).
01_EN_3P344160-11V.indd 14 08-Oct-20 9:22:57 AM