Toshiba RAV-SM560AT-E Service Manual page 64

Toshiban lämmitys- ja jäähdytyslaitteiden jälleenmyyjä pääkaupunkiseudulla on Jäähdytinpalvelu RefGroup Oy
8. 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
TE [ºC]
–5
–10
–13
–18
* The minimum TE value between 10 and 15 minutes after heating operation has started is stored in memory as TE0.
A zone
B zone
C zone
D zone
a
b
c
d
T
10 15
*
Defrost operation is performed in this zone when TE0-TE ≥ 3 continued for T seconds.
Defrost operation is performed in this zone when TE0-TE ≥ 3 continued for T seconds.
Defrost operation is performed when this zone continued for T seconds.
Defrost operation is performed when this zone continued for T seconds.
SM560 SM800
28 34
28 40
28 55
60 90
120 120
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c b a
B zone B zone
C zone C zone
– 64 –
d [min]
A zone A zone
D zone D zone