Samsung MH026FEEA - Fault Diagnosis of Major Parts

Samsung Electronics12-1212-12
12-5 Fault Diagnosis of Major Parts
Preparation : multimeter (AC voltage, DC voltage, Resistance)
Indoor
Temperature sensor
Heat exchanger in/out sensor
Outdoor
Temperature sensor
Condenser temperature sensor
Outdoor
Discharge temperature sensor
OLP temperature sensor
Indoor Fan Motor
Outdoor Fan Motor
Outdoor unit EEV
Stepping motor
Measure the resistance between terminals of the sensor connector housing.
In case of outdoor unit sensor, "view mode" is used for checking sensor temperature.
In case of Indoor temperature sensor, temperature is displayed on the display unit in
"Fan Mode" operation.
Normal
Abnormal ∞, 0Ω...open or short
Measure the resistance between terminals of the sensor connector housing.
In case of outdoor unit sensor, "view mode" is used for checking sensor temperature.
Normal
Abnormal ∞, 0Ω...open or short
Measure the resistance between terminals of the Motor connector housing
Normal At the normal temperature (10˚C - 30˚C)
Abnormal ∞, 0Ω...open or short
Measure the resistance between terminals of the Motor connector housing
Normal
Abnormal ∞, 0Ω...open or short
Measure the resistance between terminals of the Motor connector housing
Normal 40-50Ω Orange-Gray, Red-Gray, Yellow-Gray, Black-Gray
Abnormal ∞, 0Ω...open or short
DiagnosisPart
Ambient temperature 15˚C20˚C25˚C30˚C25˚C40˚C
Resistance of sensor[KΩ] 14.7 12.1 10 8.3 6.9 5.8
Ambient temperature 0˚C10˚C20˚C30˚C40˚C50˚C
Resistance of sensor[KΩ] 553 362 242 166 165 82
Resistance[Ω]
MH035FPEA MH052FPEA
* MH✳✳✳✳✳✳✳ MH✳✳✳✳✳-12 MH052FPEA1
Yellow-Blue 250~280 250~280 120~150 Main
Yellow-Red 420~480 330~370 120~150 Sub
*MH020FPEA/MH023FPEA/ MH026FPEA / MH✳✳✳✳✳-07 / MH✳✳✳✳✳-09
Terminals(wire color)
Remark
Terminal(wire color) Model Bender Resistance(Ω) Remark
SHIBAURA 356~435
SINYA 531~650
DAEYANG 312~381 Main
MH052FWEA
SUNGSHIN 130~159
DAEYANG 211.5~258.5
SHIBAURA 324.9~397
SINYA 320~391
DAEYANG 252~308 Sub
MH052FWEA
SUNGSHIN 106.2~130
DAEYANG 164.7~201.3
MH023/026/035FWEA
MH✳✳VW2-✳✳
Yellow-Blue
Red-Yellow
MH023/026/035FWEA
MH✳✳VW2-✳✳
Terminals(wire color) Resistance[Ω] Remark
Red-Blue 95~105 Main 1
Yellow-Blue 95~105 Main 2
Blue-White(run capa line) 60~75 Sub
Red-White Blue(run capa line) 0~1 Thermal fuse
24296A(1)_2 11/11/05 5:07 PM Page 12-12