Toshiba RAV-SM1603ATZG-E, RAV-SM1603DT-A, RAV-SM1603ATZ-E error Central controller, 109

[97 error] (Central controller)

Are X and Y communication lines normal?			NO
							Correct communication line.
YES
Are CN01, CN02 and CN03			NO
of the network adapter P.C. board						Correct connection of connector.
(MCC-1401) and CN309 and CN41
connectors correctly connected?
YES
			NO
Are A and B communication lines normal?					Check connection of A and B terminal blocks.
					Correct communication line of remote controller.
YES			YES
Is there no connection error of power supply wire?							Correct power supply wire.
NO
			NO
Is the main power supply electrified?
							Turn on main power supply.
YES
			YES
Did a power failure occur?
NO
			YES
Is the network address changed
							Clear the check code.
from the remote controller?
NO
			YES
Is there noise source, etc?
							Eliminate noise, etc.
NO
				No
Can other indoor units be correctly
			(Same to others)					Check central controller.
controlled from central remote controller?
And is the operation status								Defect → Replace
of the indoor unit reflected?
YES
			NO
Does the network adapter P.C. board
LED (D01) go on?
YES
	YES							NO
		Can indoor unit be normally controlled
		from the remote controller?

Check network adapter P.C. board

(MCC-1401) and transformer of power supply.

Defect → Replace

Check indoor P.C. board.

Defect → Replace

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