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MULTI V 5 Outdoor Unit Service Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Checking the Electronic Expansion Valves
Table 63: Pulse Signal Output Value and Valve Operation.
Output
(ø) No.
Wire
Color
Output State
1234
ø1 White ON ON OFF ON
ø2 Yellow ON ON ON OFF
ø3 Orange OFF OFF ON OFF
ø4 Blue OFF OFF OFF ON
ø1
ø3
ø2 ø4
M
Brown
Red
White
Red
Yellow Brown Blue
Orange
Blue
Orange
Yellow
White
Output Pulse Sequence
• 9DOYHFORVHVHTXHQFHĺĺĺĺ
• 9DOYHRSHQVHTXHQFHĺĺĺĺ
1. If the EEV open position does not change, output phase will be off.
2. If the output phase is different or continuously on, the motor will start vibrating.
EEV Valve Operation
• At power on, open position signal is 2,000 pulses output, and valve
position is set to "a" (see left). When the valve operates properly,
noise and vibration will not occur. If the valve is closed, noise will
be heard.
• Noise from EEV can be confirmed by touching the EEV surface
with a screw driver and listening.
• If liquid refrigerant is present in EEV, noise will be lower.
Valve
Open
Position
Close
Pulse
Open
Full open
1950 pulses
CHECKING THE ELECTRONIC
EXPANSION VALVES
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