– 39 –
Correct wire connection
Correct central control network address.
Check operation cause.
Check outside devices.
Defect
®
Replace
Check indoor P.C. board.
Defect
®
Replace
Check indoor P.C. board.
Defect
®
Replace
Check indoor P.C. board.
Defect
®
Replace
Check corresponding
indoor/outdoor units.
Check central controller
(including network adapter).
Defect
®
Replace.
NO
NO
YES
NO
NO
NO
NO
YES
YES
YES
NO
YES
YES
YES
YES
Are wire connections to
communication line X, Y normal?
Is indoor remote controller
[L20] displayed?
Is central controller [98] displayed?
Are outside devices of
connector CN80 connected?
Is check code displayed on follower unit
of header or follower remote controller?
Do outside devices normally operate?
Is group operation performed?
Are not multiple
same central control network
addresses connected?
[L20 error]/[98 error]
[L30 error]/[B6 error]
[b7 error] (Central controller)
