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The phenomena from main component failure
Failure mode
Judgment method
Failure process
EEV mechanical part
is locked.
If EEV mechanical part is locked, a driving motor rotates and makes
some little noises as load is not applied.
There is a problem if making the noise when EEV is completely closed
or opened.
Please replace EEV.
There is a miscon-
nected line at the EEV
motor coil or a short
circuiting is occurred.
Please measure the resistance between the coils (Red-white, red-
orange, brown-yellow, brown-blue) using a tester.
Replace EEV
Sub cooling EEV: Please measure the resistance between the coils
(Red-white, red-yellow, red-orange, red-blue) using a tester.
It is normal if the resistance is within 52 Ω ± 3 Ω (Based on 20 ℃).
Please replace EEV coil.
Outdoor unit EEV: Please measure the resistance between the coils
(Red-white, red-orange, brown-yellow, brown-blue) using a tester.
It is normal if the resistance is within 150 Ω ± 10 %.
Replace EEV
Incomplete connection
of a connector or
incomplete contact
• Please check if there is any pin that is not completely inserted to a
connector and confirm the color of a connection wire visually.
• Please separate the connector of a control board and check using a
tester.
Please check the part finding
problems.
CAUTION
• Please process the failure with accordance to the correspond EEV as specified on the right of a table
below.
