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Stepper Motor - Hisense AS-18UR4STVUH1 Service Manual

Split type air conditioner

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7
.
C
H
E
C
K
I
N
G
7
.
C
H
E
C
K
I
N
G
5. FILTER
INPUT
L3
Test in resistance.
TOOL: Multimeter.
Test the resistance of "LOAD"port. The filter is fault if the resistance of winding
0(short circuit)or∞(open circuit)

6. STEPPER MOTOR

Resistance per phase:200Ω±7%
(
5 red
Test in resistance.
TOOL: Multimeter.
Test the resistance of winding. The stepper motor is fault if the resistance of winding
0(short circuit)or∞(open circuit).
7-2. Check others
1. FUSE
Checking continuity of fuse on PCB ASS'Y.
1) Remove the PCB ASS'Y from the electrical component box..Then pull out the fuse
from the PCB ASS'Y (Fig.1)
2) Check for continuity using a multimeter as shown in Fig.2.
C
O
M
P
O
N
E
N
T
S
C
O
M
P
O
N
E
N
T
S
L2
L1
C
C
Y1
X1
M
)
(
) 1 blue
(
3 yellow
Fuse
PCB Ass抷
Fuse
Fig.2
OUTPUT
C
C
R
X2
Y2
)
Fig.1
27
A
S
-
1
8
U
R
4
S
T
V
A
S
-
1
8
U
R
4
S
T
V
U
H
1
U
H
1

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