In Heating Operation - Toshiba RAS-07PKVP-E Service Manual

High Wall, Heat Pump Type

8-3-2. In Heating Operation

(This operation controls the fan speed at the indoor unit
side.)
The indoor fan (cross flow fan) is operated by the
phase control induction motor. The fan rotates in 5
stages in MANUAL mode, and in 5 stages in AUTO
mode, respectively.
(Table 1)
HEAT ON
Fan speed setup
AUTO
YES
TC 42°C
(Fig. 4)
NO
* Fan speed =
a : In up operation 1, in down operation 0
(Fig. 5)
Basic fan control
TA - Tsc
b
[°C]
c
–0.5
d
–1.0
e
–1.5
f
–2.0
g
–2.5
–5.0
–5.5
*1: Fan speed = (M+–L+)x1/5+L+
*2: Fan speed = (M+–L+)x2/5+L+
*3: Fan speed = (M+–L+)x3/5+L+
*4: Fan speed = (M+–L+)x4/5+L+
(Calculated with linear approximation from M+ and L+)
*5: Fan speed = (H–M)x1/5+M
*6: Fan speed = (H–M)x2/5+M
*7: Fan speed = (H–M)x3/5+M
*8: Fan speed = (H–M)x4/5+M
(Calculated with linear approximation from H and M)
(Fig. 6)
Cold draft preventive control
TC
46 46 34
45 45 33
33 33 21
32 32 20
*A+4 *A+4 *A+4
*A-4 *A-4 *A-4
Fan speed MANUAL in starting
Fan speed AUTO in stability
Fan speed AUTO in starting
* No limitation while fan speed MANUAL mode is in stability.
* A: When Tsc 24, A is 24, and when Tsc < 24, A is Tsc
Tsc: Set value
MANUAL
(Fig. 3)
Fan speed
Indication
Hi Power
L W8 W9
L+ (L+M)/2 (L+M)/2
M WB WD
M+ (M+H)/2 (M+H)/2
H WE WF
Min air flow rate control
Limited to Min WD tap
TC
52
51
*
42
41
No limit
(TC – (40 + a)) / 10 x (WD – W8) + W8
Fan speed
Hi Power
L+ (W9) M(WB)
*1 *5
*2 *6
*3 *7
*4 *8
M+ (WD) H (WE)
M+(WD)
Line-approximate
M+ and SUL with Tc.
SUL (W2)
Stop
1) When setting the fan speed to L, L+, M, M+ or
H on the remote controller, the operation is
performed with the constant speed shown in
Fig. 3 and Table 8-3-2.
2) When setting the fan speed to AUTO on the
remote controller, revolution of the fan motor is
controlled to the fan speed level shown in Fig.
5 according to the set temperature and room
temperature.
3) Min. air flow rate is controlled by temperature of
the indoor heat exchanger (TC) as shown in
Fig. 4.
4) Cold draft prevention, the fan speed is
controlled by temperature of the indoor heat
exchanger (TC) as shown in Fig. 6.
In starting and in stability
In starting
• Until 12 minutes
passed after operation
start.
• When 12 to 25 minutes
FAN
passed after operation
AUTO
start and the room
temperature is 3°C or
more lower than the set
temperature.
• Room temperature
FAN
Manual
< Set temperature –4°C
Table 8-3-2 Indoor fan air flow rate (Heating)
RAS-07PKVP-E
RAS-07PKVP-ND
Fan speed
Fan Air flow
level
speed
(rpm) (m
WF 1170
WE UH 1170
WD H 1070
WC M+ 980
WB 900
WA M 880
W9 850
W8 L+ 750
W7 L 750
W6 L– 650
W5 UL 650
W4 650
W3 SUL 650
W2 560
W1 420
36
Service Manual
In stability
• When 12 to 25 minutes
passed after operation
start and the room
temperature is higher
than the set temperature
–3°C
• When 25 minutes or more
passed after operation
start
• Room temperature
≥
Set temperature –3.5°C
RAS-10PKVP-E RAS-13PKVP-E
RAS-10PKVP-ND RAS-13PKVP-ND
Fan Air flow Fan
rate speed rate speed
3 3
/h) (rpm) (m /h) (rpm)
645 1200 665 1240
645 1200 665 1240
575 1100 595 1140
510 1010 530 1050
455 930 475 960
440 880 440 880
420 850 420 850
345 750 345 750
345 750 345 750
275 650 275 650
275 650 275 650
275 650 275 650
275 650 275 650
210 560 210 560
110 420 110 420
Air flow
rate
3
(m /h)
695
695
625
560
495
440
420
345
345
275
275
275
275
210
110