Mitsubishi Electric MFZ-KJ25VE Service Manual page 23

10-5. TROUBLE JUDGEMENT CRITERIA OF MAIN PARTS
MFZ-KJ25VE MFZ-KJ35VE MFZ-KJ50VE
Part name
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12 (MAIN 1), RT13 (SUB)
RT14 (MAIN 2), RT15 (MAIN 3))
Indoor fan motor (MF)
Horizontal vane motor
(MV1) FRONT
Horizontal vane motor
(MV2) BACK
Multi-flow vane motor
(MV3)
OBH666A
Check method and criteria
Measure the resistance with a tester.
Refer to 10-7. "Test point diagram and voltage", "Indoor electronic control
P.C. board", for the chart of thermistor.
Check 10-6. "Check of indoor fan motor" and
electronic control P.C. board and indoor fan motor".
Measure the resistance between the terminals with a tester.
(Part temperature: 10°C ~ 30°C)
Color of the lead wire
BRN-other one (250 Ω)
Measure the resistance between the terminals with a tester.
(Part temperature: 10°C ~ 30°C)
Color of the lead wire Normal
BRN-other one 219 Ω ~ 273 Ω
Measure the resistance between the terminals with a tester.
(Part temperature: 10°C ~ 30°C)
Color of the lead wire
BRN-other one 306 Ω ~ 382 Ω
Normal
219 Ω ~ 273 Ω
Normal
23
"Check of indoor
RED
YLW
BRN
Figure
ROTOR
ORN GRN