Toshiba RAV-SM560AT-E Service Manual page 74

Toshiban lämmitys- ja jäähdytyslaitteiden jälleenmyyjä pääkaupunkiseudulla on Jäähdytinpalvelu RefGroup Oy
[L20 error]/[98 error]
Are cable connections to
communication line X, Y normal?
YES
Is central controller [98] displayed?
YES
Is indoor remote controller
[L20] displayed?
YES
Are not multiple
same central control network
addresses connected?
NO
Check central controller
(including network adapter).
Defect Replace.
[L30 error]/[B6 error]
Are outside devices of
connector CN80 connected?
YES
Do outside devices normally operate?
YES
Check operation cause.
[b7 error] (Central controller)
Is group operation performed?
YES
Is check code displayed on sub unit
of main or sub remote controller?
YES
Check corresponding
indoor/outdoor units.
NO
NO
YES
NO
NO
NO
NO
– 74 –
www.ilmalämpöpumput.com
Correct cable connection
Check indoor P.C. board
(MCC-1402 or MCC-1403).
Defect Replace
Correct central control network address.
Check indoor P.C. board
(MCC-1402 or MCC-1403).
Defect Replace
Check outside devices.
Defect Replace
Check indoor P.C. board
(MCC-1402 or MCC-1403).
Defect Replace