Mitsubishi SCM40ZS-S, Техническое руководство

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219
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'16 • SCM-T-199
(ii) Fan motor resistance check
Models SCM40, 45 Model SCM50
Models SCM40, 45 Model SCM50
Measuring point Resistance when normal
Measuring point Resistance when normal
DC15V
Notes(1) Remove the fan motor and measure it without power cnnected to it.
(2) If the measured value is below the value when the motor is normal, it means that the fan motor is fauly.
DC several (0-6V)
DC several V(
0-6
V)
DC280V
⑥ - ④
③ - ④
② - ④
DC15V
Outdoor main PCB
GND
DC280V
⑥-④
(Red - Black) 20 M
Ω
or higher
Measuring point Resistance when normal
⑥-④
(Red - Blue) 20 M
Ω
or higher
③-④
(White - Black) 20 k
Ω
or higher 20 k
Ω
or higher
③-④
(Brown - Blue)
CNFAN
Red
Black
White
Yellow
Blue
FM
0
⑥ ④ ⑤ ③ ② ①
⑥ ④ ⑤ ③ ② ①
DC15V
DC several (0-6V)
Outdoor main PCB
GND
DC280V
CNFAN
Red
Blue
Brown
Orange
White
FM
0
⑥ ④ ⑤ ③ ② ①
⑥ ④ ⑤ ③ ② ①
(a) Inspection of electronic expansion valve
6
White
Ye
llo
w
Orange
Blue
Re
d
5 4 3 2 1
• Inspection of electronic expansion valve as a separate unit
Measuring point Resistance when normal
(b) Outdoor fan motor check procedure
②
sub
outdoor
main
main
main
(i)
(ii)
(iii)
(iv)
DC
source
(i) Outdoor main PCB output check