Toshiba RAV-SM1102UT-E, RAV-SM1402UT-E 88, L20 error, L30 error, P10 error, F10 error

[L20 error]

NO

Are cable connections to communication line U3, U4 normal?

	YES
Are not multiple same central		YES
control network addresses connected?
	NO

Check central controller (including connection interface) indoor P.C. board. Defect → Replace.

Correct cable connection

Correct central control network address.

[L30 error]

NO

Are outside devices of connector CN80 connected?

YES

NO

Do outside devices normally operate?

YES

Check operation cause.

Check indoor P.C. board (MCC-1402). Defect → Replace

Check outside devices.

Defect → Replace

[P10 error]

Is connection of float switch connector (Indoor control P.C. board CN34) normal?

	YES
Does float switch		NO
operate?
	YES

NO

Is circuit		NO
cabling normal?
	YES

Correct connection of connector.

Check and correct cabling/wiring.

Check indoor P.C. board (MCC-1402). Defect → Replace

Does drain pump		NO	Is power of drain	NO
operate?			pump turned on?
	YES		YES

Check drain pipe, etc.

Check indoor P.C. board (MCC-1402). Defect → Replace

Replace drain pump.

Check cabling.

[F10 error]

Is connection of TA sensor connector		NO
(indoor P.C. board CN104) normal?
	YES	NO

Are characteristics of TA sensor resistance value normal?

YES

* Refer to Characteristics-1.

Correct connection of connector.

Replace TA sensor.

Check indoor P.C. board (MCC-1402). Defect → Replace

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