Toshiba Item, (Fig. 3), (Fig. 4), (Fig. 5), (Fig. 6), Fan speed, Indication, Description, 2. Indoor fan, motor control, <In heating operation

FILE NO. SVM-10020

Item

Operation flow and applicable data, etc.

Description

2. Indoor fan

<In heating operation>

1) When setting the fan speed to L,

motor control

L+, M, M+ or H on the remote

controller, the operation is per-

formed with the constant speed

HEAT ON

shown in Fig. 3 and Table 1.

2) When setting the fan speed to

AUTO on the remote controller,

MANUAL

revolution of the fan motor is

Fan speed setup

(Fig. 3)

controlled to the fan speed level

shown in Fig. 5 according to the set

Indication

Fan speed

temperature and room temperature.

3) Min air flow rate is controlled by

L

W8

temperature of the indoor heat

L+

(L + M) / 2

AUTO

exchanger (Tc) as shown in Fig. 4

M

WA

for prevent high temperature of heat

M+

(M + H) / 2

exchanger.

4) Cold draft prevention, the fan speed

H

WE

is controlled by temperature of the

YES

indoor heat exchanger (Tc) as shown

TC ≥ 108ºF (42˚C)

in Fig. 6 for keep warm temperature

Min air flow rate control

of air flow.

NO

5) In order to prevent Cold draft when

compressor stop during heating

Limited to Min WD tap

Tc ºF (ºC)

operation. Then louver will move to

126 (52)

upper position and fan speed will

reduce or off.

124 (51)

108 (42)

1 106 (41)

No limit

* Fan speed =

(Fig. 4)

(TC

W8) + W8

Cold draft preventive control

Basic fan control

Fan speed

Tc °F (°C)

Ta °F [°C]

b

AUTO

115 (46) 115 (46)

93 (34)

H (WE)

TSC

L+ (W9)

113 (45) 113 (45)

91 (33)

-1.0 (-0.5)

c

Linear-approximate

d

*1

91 (33)

91 (33)

70 (21)

H and SUL with Tc.

-2.0 (-1.0)

90 (32)

90 (32)

68 (20)

e

*2

-2.7 (-1.5)

*A+4

*A+4

*A+4

f

SUL (W2)

-3.5 (-2.0)

*3

*A-4

*A-4

*A-4

g

Stop

-4.5 (-2.5)

-9.0 (-5.0)

M+ (WD)

Fan speed MANUAL in starting

Fan speed AUTO in stability

-10.0 (-5.5)

Fan speed AUTO in starting

H(WE)

*1: Fan speed = [(M+) − (L+)] x 14 + L+

*2: Fan speed = [(M+) − (L+)] x 24 + L+

*3: Fan speed = [(M+) − (L+)] x 34 + L+

(Calculated with linear approximation from M+ and L+)

*No limitation while fan speed MANUAL mode is in stability.

*A: When Tsc ≥￿ 75°F (24°C), A is 75°F (24°C), and

when Tsc < 75°F (24°C), A is Tsc Tsc: Set value

			(Fig. 5)			(Fig. 6)
[In starting and in stability]
			In starting			In stability
	•	Until 12 minutes passed after operation start		•	When 12 to 25 minutes passed after operation start
FAN AUTO	•	When 12 to 25 minutes passed after operation			and room temp. is higher than [set temp. -5.4ºF (–3°C)]
		start and room temp.is 5.4°F (3°C) or lower than set temp.		•	When 25 minutes or more passed after operation start
FAN Manual	• Room temp. < Set temp. -7.2°F (– 4°C)			• Room temp. ≥ Set temp. -6.3°F (–3.5°C)

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