6607
(A7)
No ACK error
Chart 4 of 4
●Diagnosisofdefectives
MakesuretoturnthepowerOFFbeforeconnecting/disconnectinganyconnectors,orreplacingboards.
Diagnosis Remedy
Yes
Yes
Yes
Yes
No
No
No
No
Is the correct kind of transmission
line used?
Isitoperatinginmultirefrigerant
system?
Is the address information correct?
Doesitoperatenormally?
Whenoperatinginamultirefrigerantsystem(2or
more outdoor units), check if any of the indoor unit
storesnon-existingaddressinformation.
Replacethecontrollerboardwhichthe
displayedaddress/attributebelongsto.
Continuedfromthepreviouspage
Defective outdoor multi controller circuit board
(repeatercircuit)ontheoutdoorunitissuspected.
Replacetheoutdoormulticontrollercircuitboardone
byone,thencheckfornormaloperation.
Delete the unnecessary address using
a manual setting function on the remote
controller
(Onlyforoperatinginasystemwiththe
Fresh Master/Lossnay is connected, or in a
multirefrigerantsystemwithgroupsetting
is set).
Whenoperatinginasinglerefrigerant
system (single indoor unit), the controller of
thedisplayedaddress/attributeisdefective.
Applythecorrectkindoftransmissionline,
thenperformtheprocedure1.
Complete
89
To Next Page
Loading...
Need help?
General
