Toshiba MMU-AP0091H service manual Reset conditions, TC1

No.	Item	Outline of specifications			Remarks
6	Prevention of	(1) In all heating operation, the upper limit of the fan tap is set by
	cold air	one with higher temperature of TC2 sensor and TCJ sensor.
	discharge	• When B zone has continued for 6 minutes, the operation			• In D and E zones, priority
		shifts to C zone.			is given to remote control-
		• In defrost time, the control point is set to +6°C.			ler air speed setup.
		(˚C)		A zone: OFF	• In A and B zones, “ ” is
					displayed.
		32		B zone:
		D		Over 26˚C, below 28˚C, LOW
		30
			E	C zone:
		C
		28		Over 28˚C, below 30˚C, MED
		26		D zone:
				Over 30˚C, below 32˚C, HIGH
		20		E zone: Ultra HIGH
			B
		16
			A
7	Freeze	(1) In all cooling operation, the air conditioner operates as de-
	prevention	scribed below based upon temp. detected by TC1, TC2 and
	control (Low	TCJ sensors.
	temp. release)	To prevent the heat exchanger from freezing, the operation
		stops.

•When “J” zone is detected for 5 minutes, the command frequency becomes “S0” to the outdoor unit.

•In “K” zone, the timer count is interrupted, and held.

•When “1 ” zone is detected, the timer is cleared and the operation returns to the normal operation.

•When the command frequency became S0 with continua- tion of “J” zone, operation of the the indoor fan in LOW mode until it reaches the “1 ” zone.

It is reset when the following conditions are satisfied.

Reset conditions

1)TC1 > 12°C and TC2 > 12°C and TCJ > 12°C

2)30 minutes passed after stop.

(˚C) P1			a		TC1
		K
				P1	10°C (5°C)
Q1	J
				Q1	0°C

(2)In all cooling operation, the air conditioner operates as described below based upon temp. detected by TC2 and TCJ sensors.

•When “M” zone is detected for 45 minutes, the command frequency becomes “S0” to the outdoor unit.

•In “N” zone, the timer count is interrupted and held.

•When shifting to “M” zone again, the timer count restarts and continues.

•If “L” zone is detected, the timer is cleared and the opera- tion returns to normal operation.

Reset conditions

1)TC1 > 12°C and TC2 > 12°C and TCJ > 12°C

2)30 minutes passed after stop.

(˚C) L

P2			TC2, TCJ
	N
Q2		P2	5°C	∗ In a Model without TC2,
	M
		Q2	–2.0°C
				TC2 is not judged.

61