Mitsubishi PUZ-A18NHA6 - Page 39

E3
or
E5
(6201,
6203)
Remote controller transmission error (E3)/
signal receiving error (E5)
1Abnormalifremotecontrollercouldnot
findblankoftransmissionpathfor6
secondsandcouldnottransmit.
(Checkcode:E3)
2Remotecontrollerreceivestransmitted
dataatthesametime,comparesthe
data,andwhendetectingit,judges
differentdatatobeabnormal30
continuoustimes.(Checkcode:E3)
1Abnormalifindoorcontrollerboardcould
notfindblankoftransmissionpath.
(Checkcode:E5)
2Indoorcontrollerboardreceives
transmitteddataatthesametime,
comparesthedata,andwhendetecting
it,judgesdifferentdatatobeabnormal
30continuoustimes.(Checkcode:E5)
1Setaremotecontrollertomain,andthe
othertosub.
2Remotecontrollerisconnectedwithonlyone
indoorunit.
3Theaddresschangestoaseparatesetting.
4–6 Diagnoseremotecontroller.
a)
When“RCOK”isdisplayed,remote
controllershavenoproblem.
Turnthepoweroff,andonagaintocheck.
Whenbecomingabnormalagain,replace
indoorcontrollerboard.
b)When“RCNG”isdisplayed,replace
remotecontroller.
c)
When“RCE3”or“ERC00-66”isdisplayed,
noisemaybecausingabnormality.
12remotecontrolleraresetas
“main.”

(Incaseof2remotecontrollers)
2Remotecontrollerisconnected
with2indoorunitsormore.
3Repetitionofrefrigerant
address
4Defectivetransmittingreceiving
circuitofremotecontroller
5Defectivetransmittingreceiving
circuitofindoorcontrollerboard
6Noisehasenteredinto
transmissionwireofremote
controller.
E6
(6840)
Indoor/outdoor unit communication
error (Signal receiving error)
1Abnormalifindoorcontrollerboardcould
notreceiveanysignalnormallyfor6
minutesafterturningthepoweron.
2Abnormalifindoorcontrollerboardcould
notreceiveanysignalnormallyfor3
minutes.
3Considertheunitasabnormalunder
thefollowingcondition;When2ormore
indoorunitsareconnectedtoanout-
doorunit,indoorcontrollerboardcould
notreceiveasignalfor3minutesfrom
outdoorcontrollercircuitboard,asignal
whichallowsoutdoorcontrollercircuit
boardtotransmitsignals.
Note:CheckLEDdisplayonoutdoorcontroller
circuitboard.(ConnectA-Controlservice
tool(PAC-SG50ST))

RefertoEA–ECitemifLEDdisplaysEA–AC.
1Checkdisconnectingorloosenessofindoor/
outdoorunitconnectingwireofindoorunitor
outdoorunit.
 Checkalltheunitsincaseoftwinindoorunit
system.
2–4
Turnthepoweroff,andonagaintocheck.
 Ifabnormalitygeneratesagain,replace

indoorcontrollerboardoroutdoorcontroller 
circuitboard.
5 Turnthepoweroff,anddetachfanmotorfromcon-
nector(CNF1,2).Thenturnthepoweronagain.
 Ifabnormalityisnotdisplayed,replacefanmotor.
 Ifabnormalityisdisplayed,replaceoutdoor
controllercircuitboard.
6CheckRS1onoutdoornoisefilterboardwith
tester.Ifopenisdetected,replacetheboard.
Note:Otherindoorcontrollerboardmayhave
defectincaseoftwinindoorunitsystem.
1Contactfailure,shortcircuitor
miswiring(conversewiring)of
indoor/outdoorunitconnecting
wire
2Defectivetransmittingreceiv-
ingcircuitofoutdoorcontroller
circuitboard
3Defectivetransmittingreceiving
circuitofindoorcontrollerboard
4Noisehasenteredintoindoor/
outdoorunitconnectingwire.
5Defectivefanmotor
6Defectiverushcurrentresistor
39
Check code
Abnormal point and detection method
Judgment and action
Case
E0
or
E4
(6831,
6834)
Remote controller transmission error
(E0)/signal receiving error (E4)
1Abnormalifmainorsubremotecontrol-
lercannotreceivenormallyanytrans-
missionfromindoorunitofrefrigerant
address“0”for3minutes.
 (Checkcode:E0)
2Abnormalifsub-remotecontrollercould
notreceiveforanysignalfor2minutes.
(Checkcode:E0)
1Abnormalifindoorcontrollerboard
cannotreceiveanydatanormallyfrom
remotecontrollerboardorfromother
indoorcontrollerboardfor3minutes.
(Checkcode:E4)
2Indoorcontrollerboardcannotreceive
anysignalfromremotecontrollerfor2
minutes.(Checkcode:E4)
1Checkdisconnectionorloosenessofindoor
unitortransmissionwireofremotecontroller.
2Setoneoftheremotecontrollers“main”.
 Ifthereisnoproblemwiththeactionabove.
3Checkwiringofremotecontroller.
•Totalwiringlength:max.500m[1640ft]
(Donotusecableo3ormore.)
•Thenumberofconnectingindoorunits:
max.16units
•Thenumberofconnectingremotecontrol-
ler:max.2units
Ifthecauseoftroubleisnotinabove1–3,
4Diagnoseremotecontrollers.
a)When“RCOK”isdisplayed,remotecon-
trollershavenoproblem.
Turnthepoweroff,andonagaintocheck.
Ifabnormalitygeneratesagain,replace
indoorcontrollerboard.
b)When“RCNG”isdisplayed,replace
remotecontroller.
c)When“RCE3”or"ERC00-66"isdis-
played,noisemaybecausingabnormality.
Note:
Iftheunitisnotnormalafterreplacing
indoorcontrollerboardingroupcontrol,
indoorcontrollerboardofaddress“0”may
beabnormal.
1Contactfailureattransmission
wireofremotecontroller
2Allremotecontrollersareset
as“sub”remotecontroller.In
thiscase,E0isdisplayedon
remotecontroller,andE4is
displayedatLED(LED1,LED2)
ontheoutdoorcontrollercircuit
board.
3Miswiringofremotecontroller
4Defectivetransmittingreceiving
circuitofremotecontroller
5Defectivetransmittingreceiving
circuitofindoorcontrollerboard
ofrefrigerantaddress“0”.
6Noisehasenteredintothe
transmissionwireofremote
controller.
E1
or
E2
(6832,
6833)
Remote controller control board
1Abnormalifdatacannotbenormally
readfromthenonvolatilememoryofthe
remotecontrollercontrolboard.
(Checkcode:E1)
2Abnormaliftheclockfunctionofremote
controllercannotbenormallyoperated.
(Checkcode:E2)
1Defectiveremotecontroller 1Replaceremotecontroller.
OCH577A