Toshiba RAV-SM562BT-E Service Manual/Integration page 88

[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?
YES
NO
YES
YES
NO
NO
Is circuit
cabling normal?
NO
Is power of drain
pump turned on?
YES
YES
* Refer to Characteristics-1.
– 88 –
NO
YES
Correct central control network address.
NO
Check indoor P.C. board (MCC-1402).
Defect → Replace
NO
Correct connection of connector.
NO
Check and correct cabling/wiring.
YES
Check indoor P.C. board (MCC-1402).
Defect → Replace
NO
Check indoor P.C. board (MCC-1402).
Defect → Replace
YES
NO
Correct connection of connector.
NO
Check indoor P.C. board (MCC-1402).
Defect → Replace
Correct cable connection
Check outside devices.
Defect → Replace
Replace drain pump.
Check cabling.
Replace TA sensor.