27
P
BLK
YLW
WHT RED
P
Part name
Measure the resistance between the terminals with a tester.
(Coil wiring temperature-10°C ~ 40°C)
Compressor
Outdoor fan
motor
Check method and criterion
Figure
Measure the resistance between the terminals with a tester.
(Coil wiring temperature -10°C ~ 40°C)
Measure the resistance with a tester. (Part temperature -10°C ~ 40°C)
Normal
1,410~1,730
Ω
Abnormal
Opened or short-circuited
Normal
79~98
Ω
129~158
Ω
47~58
Ω
MUX-20TV-
E1
MUX-19TV-
E1
Abnormal
Opened or
short-circuited
WHT-BLK
BLK-RED
BLK-YLW
Normal
MUX-19TV-
E1
RH220VHAT RH135VHAT
1.87~2.30
"
3.68~4.51
"
3.44~4.22
"
5.08~6.22
"
Abnormal
Opened or
short-circuited
MUX-20TV-
E1
RH140VHAT RH174VHAT
3.55~4.35
"
2.91~3.57
"
5.03~6.17
"
5.11~6.26
"
MUX-25TV-
E1
RH231VHAT
1.87~2.30
"
3.44~4.22
"
( )
Solenoid coil
21R, 21RA,
21RB
MUX-25TV-
59~72
Ω
66~80
Ω
65~79
Ω
E1
C-R
C-S
10-3.
Trouble criterion of main parts
Check of indoor fan motor
A
Indoor fan does not operate.
Repair the indoor fan motor.
Disconnect lead wires from connector CN211 on indoor electronic control P.C. board.
Measure resistance between lead wires No.1 and No.3 and then No.2 and No.3.
Are lead wires connected?
Reconnect the lead wires.
Is soldered point normal?
Replace the indoor electronic con-
trol P.C. board.
Resolder it.
Is resistance 0 (short circuit) or
∞
(open circuit)?
Yes ( 0 or
∞
)
No
(others)
Yes
No
Yes
No
Turn OFF the power supply.
Check connector CN211 visually.
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