Справочник Пользователя для Toshiba RAS-B10SKVP-E

– 36 –

20˚C

0˚C

–1˚C

–6˚C
–7˚C

OFF

Heating output for winding

10W or equivalent

10W or equivalent

Winding is not heated.

Indoor temper

ature

Outdoor heat e

xchanger  

temper

ature

The previous operation was heating and

2 hours passed after the operation had stopped.

YES

NO

–4˚C

0’

10’ 15’

29’

35’

–6˚C

–25˚C

Operation time 
(Minute)

Start of heating operation

Te0 detection time

*

Outdoor heat e

xchanger temper

ature

C zone

A zone

B zone

7. Quick heating

control

8. Defrost control

(Only in heating
operation)

This function quickens the starting of heating opera-
tion when indoor/outdoor temperature is low.
(Available only in heating operation)

When indoor temperature is low, this function stores
the heat by heating winding depended on the outdoor
temperature and then it enables the hot air blowing out
quickly.

(This function removes frost adhered to the outdoor
heat exchanger.)

The temperature sensor of the outdoor heat ex-
changer (Te sensor) judges the frosting status of the
outdoor heat exchanger and the defrost operation is
performed with 4-way valve reverse defrost system.

* The minimum value of Te sensor 10 to 15 minutes

after start of operation is stored in memory as Te0.

When the following conditions are satis-
fied, winding is heated by output varied by
the outdoor heat exchanger temperature.

The previous operation was heating.

2 hours passed after operation stop.

The room temperature is 20°C or lower.

The indoor temperature sensor detects the
room temperature.
If the detected room temperature is 20°C
or lower, the outdoor heat exchanger
temperature sensor detects the outdoor
heat exchanger temperature. As shown in
the left figure, winding of the compressor
is heated for each division of the tempera-
ture (  for each outdoor temperature) and
the heat is stored.

The necessity of defrost operation is
detected by the outdoor heat exchanger
temperature. The conditions to detect the
necessity of defrost operation differ in A,
B, or C zone each. (Table 1)

• Defrost operation in A to C zones

1) Stop operation of the compressor for 20

seconds.

2) Invert (ON) 4-way valve 10 seconds

after stop of the compressor.

3) The outdoor fan stops at the same time

when the compressor stops.

4) When temperature of the indoor heat

exchanger becomes 38°C or lower,
stop the indoor fan.

• Returning conditions from defrost

operation to heating operation

1) Temperature of outdoor heat exchanger

rises to +8°C or higher.

2) Temperature of outdoor heat exchanger

is kept at +5°C or higher for 80 seconds.

3) Defrost operation continues for

15 minutes.

<Returning from defrost operation>
1) Stop operation of the compressor for

approx. 50 seconds.

2) Invert (OFF) 4-way valve approx. 40

seconds after stop of the compressor.

3) The outdoor fan starts rotating at the

same time when the compressor starts.

When Te0 - TE 

≥

 2.5 continued for 2 minutes in A zone,

defrost operation starts.

When the operation continued for 2 minutes in B zone,
defrost operation starts.

When Te0 - TE 

≥

 3 continued for 2 minutes in C zone,

defrost operation starts.