Checking The Electronic Expansion Valves - LG Multi V5 Service Manual
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- Data manual (162 pages) ,
- Manual book (133 pages) ,
- Engineering manual (105 pages)
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CHECKING THE ELECTRONIC
EXPANSION VALVES
Checking the Electronic Expansion Valves
Table 63: Pulse Signal Output Value and Valve Operation.
Output
Wire
(ø) No.
Color
1
ø1
White
ON
ø2
Yellow
ON
ø3
Orange
OFF
ø4
Blue
OFF
Output Pulse Sequence
•
•
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
Valve
Close
Open
Position
116
Output State
2
3
ON
OFF
ON
ON
OFF
ON
OFF
OFF
Full open
Open
1950 pulses
Pulse
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.
4
ON
OFF
OFF
ON
• 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.
Brown
White
Red
ø1
Red
Blue
ø3
Orange
Orange
ø2
Yellow
Yellow
Brown Blue
White
M
ø4
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Troubleshooting
