Toshiba RAV-SM2802DT-TR, RAV-SM2802DT-E, RAV-SM2242DT-TR Tc, Tcj, Tcn, Conditions Tc n

No.	Item	Outline of specifications	Remarks
7	Freeze preventive control	1) The cooling operation is performed as follows	Tc, Tcj:
	(Low temperature release)	based on the detected temperature of Tc sensor or	Indoor heat exchanger
		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 [Fan] 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
following conditions are satisfied.
	5 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.
Q Tcn ≤ Tc (n – 1) – 5
R Tcn < Tc (n – 1) – 1 and Tcn ≤ Ta < 5°C

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