Abnormal points and detection methods Causes and checkpoints
Abnormalif2ormoreunitswiththesameaddressareexisting. Thereare2unitsormorewiththesameaddress
in their controller among outdoor unit, indoor unit,
Fresh Master, Lossnay or remote controller
Noise interference on indoor/outdoor connectors
●Diagnosisofdefectives
MakesuretoturnthepowerOFFbeforeconnecting/disconnectinganyconnectors,orreplacingboards.
Diagnosis Remedy
6600
(A0)
Duplexaddresserror
No
Yes
Yes
No
Isthereanyunitwiththesame
address?
Doesitoperatenormally?
Correcttheaddress,andturnthepower
OFF of indoor/outdoor unit, Fresh Master
or Lossnay simultaneously for 2 minutes or
more,thenturnthepowerbackON.
Malfunction of sending/receiving circuit on
indoor/outdoorunitissuspected.
There is no abnormality on the AC unit.
Itmightbecausedbyanexternalnoise,so
check the transmission line to remove the
factor(s).
Searchforaunitwiththesameaddressas
the source of abnormality.
TurnthepowerbackON.
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