Toshiba RAV-SP454ATZ-E Outline of specifications, Remarks, Conditions, Tc n, D zone, C zone

No.	Item	Outline of specifications	Remarks
7	Cool air discharge	1) In heating operation, the indoor fan is controlled	In D and E zones, the
	preventive control	based on the detected temperature of Tc sensor or	priority is given to air
		Tcj sensor. As shown below, the upper limit of the	volume selection setup
		revolution frequency is restricted.	of remote controller.
		However B zone is assumed as C zone for	In A zone while thermo
		6 minutes and after when the compressor activated.	is ON, [PRE-HEAT
		In defrost operation, the control value of Tc is	(Heating ready)] is
			displayed.
		shifted by 6°C.

Tc	(˚C)
Tcj		HH
	32
		H
	30
		L	E zone
	28
		UL	D zone
	26
	20	OFF	C zone
			B zone
	16
			A zone

8 Freeze preventive control	1) The cooling operation (including Dry operation) is	Tcj:
(Low temperature release)	performed as follows based on the detected	Indoor heat exchanger
	temperature of Tc sensor or Tcj sensor.
		sensor temperature

When [J] zone is detected for 6 minutes (Following figure), the commanded frequency is decreased from the real operation frequency.

After then the commanded frequency changes every 30 seconds while operation is performed in [J] zone.

In [K] zone, time counting is interrupted and the operation is held.

When [ I ] zone is detected, the timer is cleared and the operation returns to the normal operation.

If the commanded frequency becomes S0 because the operation continues in [J] zone, the return temperature A is raised from 5°C to 12°C until [ I ] zone is detected and the indoor fan operates with [L] mode.

(˚C)

5 I A

K

2

J

In heating operation, the freeze-preventive control	Tcn:
works if 4-way valve is not exchanged and the	Tc temperature when 5
following conditions are satisfied.
	minutes elapsed after
(However the temperature for J zone dashing
	activation
control is changed from 2°C to –5°C.)

<Conditions>	Tc (n – 1):
	Tc temperature at start
• When Q or R is established 5 minutes after
	time
activation.

QTcn ≤ Tc (n – 1) – 5

R Tcn < Tc (n – 1) – 1 and Tcn ≤ Ta < 5°C

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