Carrier RAV-SP180UT-UL Service Manual page 83

[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 wired remote controller and
simple remote controller?
YES
Check corresponding
indoor unit/outdoor unit.
NO
NO
NO
NO
– 83 –
Check indoor P.C. board.
Defect → Replace
Check outside devices.
Defect → Replace
Check indoor P.C. board.
Defect → Replace