Toshiba MMU-AP0091H service manual Case of AI-NET central remote controller

In case of AI-NET central remote controller

1.Operation for CHECK display

When pushing the CHECK switch, the indoor unit No. (Network address No.) including the check data is displayed in the UNIT No. display section, and the check code is displayed in the set up temp. display section.

								ON
MONITOR	ZONE	UNIT		ON	CENTER	AUX.TYPE		STANDBY
SET	ALL			OFF	LOCKED	TIMER No.		FILTER
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16					MODE	FAN	TEMP.	CHECK
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32					FAN ONLY	AUTO	1	˚C
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48					COOL	HIGH	2
					DRY	MED.
							LOUVER
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64					HEAT	LOW
					AUTO	FIX	MANUAL
MONITOR/SET ALL/ZONE		ZONE UNIT	ON	CENTER/LOCKED MODE		TEMP. FILTER RESET CHECK
ZONE SET/ENTER	SELECT		OFF	TIMER ON FAN			LOUVER

CHECK switch

Push for 0.5 seconds to display CHECK code.

Push for 3 seconds to reset indoor microprocessor. (While indoor microprocessor is locked by ALL STOP alarm)

Push for 10 seconds to clear check data.

RESET switch

Push the switch in the hole with pin. The remote controller resets initialized. (All data is cleared.)

2. Reading of CHECK monitor display

7 segment display

Hexadecimal notation

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Decimal notation

Display on CHECK monitor

Unit line No. (Network address No.)

MONITOR ZONE		UNIT	ON	CENTER	AUX.TYPE		STANDBY
SET	ALL		OFF	LOCKED	TIMER No.		FILTER
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16				MODE	FAN	TEMP.	CHECK
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32				FAN ONLY	AUTO	1	˚C
				COOL	HIGH	2
33 34	35 36 37 38 39 40 41 42 43 44 45 46 47 48			DRY	MED.
						LOUVER
49 50	51 52 53 54 55 56 57 58 59 60 61 62 63 64			HEAT	LOW
				AUTO	FIX	MANUAL

Check code detected at first

Check code detected at last

CHECK data

(Example)

There is no check data.

UNIT

TEMP. CHECK

(Example)

In No.1 unit, first the interconnection wire (bus communication line) of indoor/outdoor has failed. Next, the room temp. sensor is defective.

For No.16 unit, the high pressure switch at the inverter unit side operates.

UNIT

TEMP. CHECK 1

UNIT

TEMP. CHECK

2

UNIT

TEMP. CHECK 1

123