Toshiba RAV-SP404ATZ-E, RAV-SP804ATZG-E Defrost control, Start of heating operation, Zone

6. Defrost control

•In heating operation, defrost operation is performed when TE sensor temperature satisfies any condition in A zone to C zone.

‚The defrost operation is immediately finished if TE sensor temperature has become 12°C or more, or it also is finished when condition of 5°C < TE < 12°C has continued for 80 seconds.

The defrost operation is also finished when defrost operation has continued for 15 minutes even if TE sensor temperature has become 5°C or lower.

ƒAfter defrost operation has finished, the compressor and the outdoor fan start heating operation after stopped for approx. 40 seconds.

Start of heating operation

0	10	15	29	35	[min.]
TE [˚C]
–4
					A zone
–6

–10

B zone

–25

* C zone

Dzone

∗The minimum TE value between 10 and 15 minutes after heating operation has started is stored in memory as TE0.

A zone	Defrost operation is performed in this zone when TE0-TE > 2.5 continued for 20 seconds.
B zone	Defrost operation is performed in this zone when TE0-TE > 3 continued for 20 seconds.
C zone	Defrost operation is performed when this zone continued for 20 seconds.

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