Toshiba RAV-SM1603ATZG-E, RAV-SM1603DT-A, RAV-SM1603ATZ-E, RAV-SM1403DT-A P10 error, F10 error, 77

[P10 error]

Is connection of

float switch connector NO (Indoor control board CN34)

normal?

YES

NO YES

Correct connection

of connector.

Does float switch work?			Is circuit wiring normal?
YES				NO
			Check and correct wiring
			and wire circuit.
		NO
Does drain pump work?
YES
				NO	Are connector pins 1 and 2	NO
		Is power of
					at drain pump unit side shorted
	drain pump turned on? ∗
					(Resistance value 0)?
		YES			YES
					Replace drain pump
Check the drain pipe, etc.
					and indoor P.C. board
					(MCC-1403).

Replace drain pump.

Check wiring.

Check indoor P.C. board

(MCC-1403).

Defect → Replace

∗ Check that voltage of 1-2 pin of CN504 on the indoor P.C. board is +12V. (1 pin is plus (+).)

[F10 error]

Is connection of TA sensor connector (CN104 on indoor P.C. board) correct?

YES

Are characteristics of

TA sensor resistance value normal?

YES

Check indoor P.C. board (MCC-1403).

Defect → Replace

NO

Correct connection of connector.

NO

Replace TA sensor.

∗Refer to TA sensor (Temperature-Resistance value characteristic table)

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