Mitsubishi PUY-A18NHA6 - Page 43

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5.Ifdisplayedaddressorattributeis
FRESHMASTER,
 Indoorunitdetectsabnormalitywhen
indoorunittransmittedtoFRESH
MASTERandtherewasnoreply(ACK).
1Duringsequentialoperation
ofindoorunitandFRESH
MASTERofotherrefrigerant
system,ifindoorunittransmits
toFRESHMASTERwhile
outdoorunitpowersupplyof
samerefrigerantsystemwith
FRESHMASTERisturnedoff
orwithin2minutesofrestart,
abnormalityisdetected.
2Contactfailureoftransmission
wireofindoorunitorFRESH
MASTER
3Disconnectionoftransmission
connector(CN2M)ofindoor
unitorFRESHMASTER
4Defectivetransmittingreceiving
circuitofindoorunitorFRESH
MASTER
Check code Abnormal point and detection method
Case
Judgment and action
A7
(6607)
6.Ifdisplayedaddressorattributeis
LOSSNAY,
 Indoorunitdetectsabnormalitywhen
indoorunittransmittedtoLOSSNAYand
therewasnoreply(ACK).
1Ifthepowersupplyof
LOSSNAYisturnedoff,indoor
unitdetectsabnormalitywhen
ittransmitstoLOSSNAY.
2Duringsequentialoperation
ofindoorunitandLOSSNAY
ofotherrefrigerantsystem,
ifindoorunittransmitsto
LOSSNAYwhileoutdoorunit
powersupplyofsamerefrig-
erantsystemwithLOSSNAY
isturnedofforwithin2min-
utesofrestart,abnormalityis
detected.
3Contactfailureoftransmis-
sionwireofindoorunitof
LOSSNAY
4Disconnectionoftransmission
connector(CN2M)ofindoor
unit
5Defectivetransmittingreceiv-
ingcircuitofindoorunitor
LOSSNAY
7.Ifdisplayedaddressorattributeisnon-
existent,
1Theunitofformeraddress
doesnotexistasaddress
switchhaschangedwhilethe
unitwasenergized.
2Abnormalityisdetected
whenindoorunittransmit-
tedbecausetheaddress
ofFRESHMASTERand
LOSSNAYarechangedafter
sequentialoperationofFRESH
MASTERandLOSSNAYby
remotecontroller.
Fromthepreviouspage.
4.Ifdisplayedaddressorattributeis
remotecontroller,
 Indoorunitdetectsabnormalitywhen
indoorunittransmittedtoremotecontrol-
lerandtherewasnoreply(ACK).
1Duringgroupoperationwith
indoorunitofmulti-refrigerant
system,ifindoorunittransmit
toremotecontrollerwhileout-
doorunitpowersupplyofone
refrigerantsystemisturnedoff
orwithin2minutesofrestart,
abnormalityisdetected.
2Contactfailureoftransmission
wireofremotecontrolleror
indoorunit
3
Disconnectionoftransmission
connector(CN2M)ofindoorunit
4Defectivetransmittingreceiving
circuitofindoorunitorremote
controller
Same as mentioned in “A7” of the previous
page.
OCH577A