Toshiba RAV-SP1104AT-E Defrost control, Start of heating operation, Normal To Abnormal To

10.Defrost control

1)In heating operation, defrost operation is performed when TE sensor satisfies any condition in A zone to D zone.

2)During defrosting operation, it finishes if TE sensor continued 12°C or higher for 3 seconds or continued 7°C ≤ TE < 12°C for 1 minute.

The defrost operation also finishes when it continued for 10 minutes even if TE sensor temperature was 7°C or lower.

3)After defrost operation was reset, the compressor stopped for approx. 40 seconds and then the heating operation starts.

Start of heating operation

TE [˚C] 0 10 15 39 45 55 d [min.]

–2

–5

A zone

–10

B zone D zone

–23
∗	C zone

∗The minimum TE value and To value between 10 and 15 minutes after heating operation has started are stored in memory as TE0 and To0, respectively.

	In normal To	In abnormal To
A zone	When status (TE0 – TE) – (To0 – To) ≥ 3°C	When status (TE0 – TE) ≥ 3°C
	continued for 20 seconds	continued for 20 seconds
B zone	When status (TE0 – TE) – (To0 – To) ≥ 2°C	When status (TE0 – TE) ≥ 2°C
	continued for 20 seconds	continued for 20 seconds
C zone	When status (TE ≤ –23°C) continued for 20 seconds
D zone	When compressor operation status of TE < –2°C is calculated by d portion

4) The time of above d can be changed by	J805	J806	d
exchanging jumper [J805] and [J806] of the
			150 minutes
outdoor control P.C. board.	¡	¡
			Setting at shipment
(Setting at shipment: 150 minutes)
	¡	×	90 minutes
	×	¡	60 minutes
	×	×	30 minutes

¡ : Short circuit, × : Open

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