6.Defrost control

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

R The defrost operation is immediately finished if TE sensor temperature has become 12°C or more, or it also is finished when condition of 7°C < TE < 12°C has continued for 1 minute. The defrost operation is also finished when defrost operation has continued for 10 minutes even if TE sensor temperature has become 7°C or lower.

S After defrost operation has finished, the compressor and the outdoor fan start heating operation after stopped for approx. 50 seconds.

Start of heating operation

 

0

10

15

c

b

a

d [min.]

TE [ºC]

 

 

 

 

 

 

 

 

 

 

 

–4

(–5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A zone

–6 (–10)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–10 (–13)

 

 

 

 

 

 

 

B zone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–25 (–18)

 

 

*

 

 

 

 

 

 

 

D zone

 

 

 

 

 

 

C zone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Numerals enclosed with parentheses represent numeral values of SM110 and SM140.

* 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 > 3 continued for T seconds.

B zone

Defrost operation is performed in this zone when TE0-TE > 3 continued for T seconds.

C zone

Defrost operation is performed when this zone continued for T seconds.

 

 

 

 

D zone

Defrost operation is performed when this zone continued for T seconds.

 

 

 

 

 

 

 

 

 

SM56, SM80

SM110, SM140

 

 

 

 

 

a

35

50

 

 

 

 

 

b

29

35

 

 

 

 

 

c

29

30

 

 

 

 

 

d

90

90

 

 

 

 

 

T

20

20

 

 

 

 

 

– 79 –

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Image 79
Toshiba RAV-SM802BT-E, RAV-SM1102CT-E, RAV-SM1102BT-E service manual Defrost control, Start of heating operation, Te ºc, Zone

RAV-SP1102UT-E, RAV-SM562BT-E, RAV-SM562CT-E, RAV-SM563AT-E, RAV-SM802BT-E specifications

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