Check code
6607
(A7)
No ACK error
Chart 3 of 4
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis
Remedy
Yes
Yes
No
No
No
Yes
Yes
No
The transmission line is connected
properly.
It is not exceeding the tolerance.
Check the transmission line whether it
exceeds the tolerance or not.
Check whether the correct kind of
transmission line is used or not.
Correct it within the tolerance, then perform
the procedure 1.
Connect the transmission line properly,
then perform the procedure 1.
Is the abnormality reproduced?
Is it set properly?
There is no abnormality on the AC unit.
It might be caused by an external noise, so check the
transmission line to remove the factor(s).
Set the address properly, then perform the
procedure 1.
Check the address switch on the source of
abnormality.
Check the transmission line for a
disconnection and looseness
(on the terminal board and connector).
Turn the power OFF of indoor/outdoor unit, Fresh
Master, Lossnay and remote controller simultaneously
for 2 minutes or more, then turn the power back ON.
Procedure 1:
Continue to the next page
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OCH668B
