Mitsubishi Electric MS-GD80VB-E1, Руководство по обслуживанию

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MS-GD80VB
Part name
Figure
Check method and criterion
Indoor fan motor (MF)
INNER
PROTECTOR
135± 5 °C OPEN
Color of lead wire
WHT – BLK
BLK – RED
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Refer to 10-6."Test point diagram and voltage",
"Indoor electronic control P.C. board", for the chart of thermistor.
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12 (main), RT13 (sub))
Horizontal vane
motor (MV1)
Vertical vane
motor (MV2)
Motor part
Sensor part
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
Color of lead wire
BRN – YLW
YLW – GRY
Normal
4.5 ~ 5.5 V
Measure the voltage power ON.
(When fan revolved one time)
0 V → 5 V → 0 V
(Approx.)
Normal
282 Ω ~ 306 Ω
Measure the resistance between the terminal with a tester.
(Part temperature 10°C ~ 30°C)
BLK RED
WHT
GR
Y
YL
W
BRN
Normal
132 Ω ~ 144 Ω
152 Ω ~ 166 Ω
YLW
GRN ORN
BRN
RED
ROTOR
MAIN
AUX.
P
:INNER PROTECTOR
P
10-4. TROUBLE CRITERION OF MAIN PARTS
Check of indoor fan motor
A
When OPERATION INDICATOR lamp flashes 3-time.
Indoor fan motor does not operate.
Disconnect lead wires from connector CN211 on the indoor electronic control P.C. board.
Measure resistance between lead wires No.1 and No.4 and then No.3 and No.4.
Are lead wires connected?
Is soldered point of the connector
correctly soldered?
Is resistance 0 (short circuit) or (open circuit)?
Yes ( 0 or )
No
(others)
Yes
No
Yes
No
Resolder it.
Reconnect the lead wires.
Repair or replace the indoor fan motor.
Turn OFF the power supply.
Check connector CN211 visually.
Turn ON the power supply. Stop it if the unit operate.
Insert screwdriver into air outlet to rotate indoor fan
motor slowly for 1 revolution or over, and measure
voltage between No.2(+) and No.3(-) on CN121.
Replace the indoor electronic control P.C. board.
Does voltage repeat 0 V DC and 5 V DC?
Yes
No
10-5. TROUBLESHOOTING FLOW
OBH511A