In Heating Operation> (Heat Pump Model) - Toshiba RAS-M10PKVP-E Service Manual

Item
<In heating operation> (Heat pump model)
2. Indoor fan
motor control
(This operation controls the fan speed at indoor unit side.)
(Continued)
The indoor fan (cross fl ow 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 2)
HEAT ON HEAT ON
Fan speed setup Fan speed setup
AUTO AUTO
TC TC 42˚C 42˚C
NO NO
(Fig. 4) (Fig. 4)
[ ˚C ] [ ˚C ]
TA TA
b b
TSC TSC
c c
–0.5 –0.5
d d
–1.0 –1.0
e e
–1.5 –1.5
f f
–2.0 –2.0
g g
–2.5 –2.5
–5.0 –5.0
–5.5 –5.5
1: Fan speed = (M + L) 1: Fan speed = (M + L)
5 Fan speed 5 Fan speed – –
– –
Operation fl ow and applicable data, etc.
MANUAL MANUAL
Indication Indication Fan speed Fan speed
L L
L+ L+
M M
M+ M+
H H
YES YES
Min air flow rate control Min air flow rate control
Tc Tc
52 52
51 51
42 42
41 41
Fan speed = Fan speed =
(TC – (40 + a)) / 10 × (WD – W8) + W8 (TC – (40 + a)) / 10 × (WD – W8) + W8
Fan speed Fan speed
Hi Power Hi Power
L+ (W9) L+ (W9) M (WB) M (WB)
1 1
2 2
3 3
4 4
M+ (WD) M+ (WD) H (WE) H (WE)
1/5 + L+ 1/5 + L+
3/5 + L+ 3/5 + L+
– – × ×
× 1/5 + M × 1/5 + M
× ×
(Fig. 5) (Fig. 5)
(Fig. 3) (Fig. 3)
Hi Power Hi Power
W8 W8 W9 W9
(L + M) / 2 (L + M) / 2 (L + M) / 2 (L + M) / 2
WB WB WD WD
(M + H) / 2 (M + H) / 2 (M + H) / 2 (M + H) / 2
WE WE WF WF
Limited to Min WD tap Limited to Min WD tap
No limit No limit
Tc Tc
46 46 46 46
45 45 45 45
33 33 33 33
5 5
32 32 32 32
6 6
A+4 A+4 A+4 A+4
7 7
A-4 A-4 A-4 A-4
8 8
Tsc: Set value Tsc: Set value
– 32 –
Description
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 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 fl ow 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.
Cold draft preventive control Cold draft preventive control
34 34
H (WE) H (WE)
33 33
Line-approximate Line-approximate
H and SUL with Tc. H and SUL with Tc.
21 21
20 20
A+4 A+4
SUL (W2) SUL (W2)
A-4 A-4
Stop Stop
Fan speed MANUAL in starting Fan speed MANUAL in starting
Fan speed AUTO in stability Fan speed AUTO in stability
Fan speed AUTO in starting Fan speed AUTO in starting
24, A is 24, and when Tsc < 24, A is Tsc 24, A is 24, and when Tsc < 24, A is Tsc
(Fig. 6) (Fig. 6)