Defrost control – Toshiba CARRIER RAV-SP300AT2-UL User Manual

Page 37

Advertising
background image

– 37 –

* 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.

0

10

15

29

35

91

[min.]

24.8 (–4)

TE

˚F (˚C)

21.2 (–6)

14 (–10)

–25

A zone

A zone

A zone

B zone

B zone

B zone

C zone

C zone

C zone

Start of heating operation

D zone

D zone

D zone

A zone

B zone

C zone

D zone

In normal To

In abnormal To

When status (TE0 – TE) – (To0 – To) ≥ 37.4°F (3°C)

When status (TE0 – TE) ≥ 37.4°F (3°C)

continued for 20 seconds

continued for 20 seconds

When status (TE0 – TE) – (To0 – To) ≥ 36.5°F (2.5°C)

When status (TE0 – TE) 36.5°F (2.5°C)

continued for 20 seconds

continued for 20 seconds

When the status (TE ≤ –14.8°F (–26°C)) continued for 20 seconds

When the status (TE ≤ 14°F (–10°C)) continued for 20 seconds

11. 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 53.6°F (12°C) or continued 41°F (5°C) ≤

TE < 53.6°F (12°C) for 80 seconds. The defrost operation also finishes when it continued for 15 minutes

even if TE sensor temperature was 41°F (5°C) or lower.

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

operation starts.

Advertising