Toshiba RAV-SM563UT-E Service Manual/Integration page 89

[L20 error]
Are cable connections to communication line U3, U4 normal?
Are not multiple same central
control network addresses connected?
Check central controller (including connection interface) indoor P.C. board.
Defect → Replace.
[L30 error]
Are outside devices of connector CN80 connected?
Do outside devices normally operate?
Check operation cause.
[P10 error]
Is connection of float switch connector
(Indoor control P.C. board CN34) normal?
YES
Does float switch
operate?
YES
Does drain pump
operate?
YES
Check drain pipe, etc.
[F10 error]
Is connection of TA sensor connector
(indoor P.C. board CN104) normal?
Are characteristics of TA sensor resistance value normal?
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YES
NO
YES
YES
NO
NO
Is circuit
cabling normal?
YES
NO
Is power of drain
pump turned on?
YES
YES
YES
* Refer to Characteristics-1.
– 89 –
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NO
Correct cable connection
YES
Correct central control network address.
NO
Check indoor P.C. board (MCC-1402).
Defect → Replace
NO
Check outside devices.
Defect → Replace
Correct connection of connector.
NO
Check and correct cabling/wiring.
Check indoor P.C. board (MCC-1402).
Defect → Replace
NO
Check indoor P.C. board (MCC-1402).
Defect → Replace
Replace drain pump.
Check cabling.
NO
Correct connection of connector.
NO
Replace TA sensor.
Check indoor P.C. board (MCC-1402).
Defect → Replace
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