Toshiba RAV-SM2242DT-E Service Manual page 20

n Wire connection change of fan motor
This duct is composed of 3 fan motors.
To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires
that are connected to the underside of the fan tap changing terminal block to the same number
(F1, F2 or F3) terminal.
The wires of the fan motor has been connected to (F2) [External static pressure 137Pa (14mmAq)] as
factory default.
Low static pressure (F1)
FM
Fan motor
F F
1 2
Standard (Middle) static pressure (F2)
FM
Fan motor
F F
1 2
High static pressure (F3)
FM
Fan motor
F F
1 2
Terminal block No.
F1
F2
F3
∗ Do not use F4.
NOTE
When the external static pressure is changed, write down the static pressure once change in the wiring
diagram of the indoor unit is made.
FM
Fan motor
F F F F F F
3 4 1 2 3 4
FAN3 FAN2
FM
Fan motor
F F F F F F
3 4 1 2 3 4
FAN2
FAN3
FM
Fan motor
F F F F F F
3 4 1 2 3 4
FAN3
Fan motor wiring
Yellow
Low static pressure
Blue
Middle static pressure
Orange
High static pressure
FM
Fan motor
F F F F
1 2 3 4
FAN1
Fan tap changing
terminal block
FM
Fan motor
F F F F
1 2 3 4
FAN1
FM
Fan motor
F F F F
1 2 3 4
FAN2
FAN1
External static pressure
Pa (mmAq)
69 (7)
137 (14)
196 (20)
– 20 –
YEL: Yellow
BLU: Blue
ORG: Orange
Electrical control box
Control
P.C. board
4P terminal
block
3P terminal
block
2P terminal
block
Remarks
Factory default