Toshiba RAV-SM564UT-E Service Manual page 102

[L20 error]
Are wiring connections
to communication lines
U3 and U4 normal?
YES
Is not the multiple same central
control system addresses connected?
NO
Check central controller
(including network adapter) and
indoor P.C. board (MCC-1570).
Defect → Replace
[L30 error]
Are outside devices of
connector CN80 connected?
YES
Do outside devices normally work?
YES
Check cause of operation.
[P30 error] (Central controller)
Is group operation carried out?
YES
Is there check code
on sub remote controller in main
and sub remote controllers?
YES
Check corresponding
indoor unit/outdoor unit.
Tel: 01823 665660
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NO
YES
NO
NO
NO
NO
– 102 –
www.heronhill.co.uk
Correct wiring connection.
Correct central control system address.
Check indoor P.C. board (MCC-1570).
Defect → Replace
Check outside devices.
Defect → Replace
Check indoor P.C. board (MCC-1570).
Defect → Replace
Fax: 01823 665807