LG MULTI V 5 Manual Book page 80

■ Physical Failure Judge Method
2-1. EEV 불량 판단 _ 물리적 불량 판단 방법
1. Main PCB reset to initialize EEV
: Full Open (1,950 pls) → Full Close (1,950 pls + 200 pls) → Open (32 pls - 4Way valve on) or Open
(1 950 pls - 4Way valve off) ① Main PCB 리셋으로 EEV 초기화 실시
: Full Open (1950pls)  Full Close(1950pls + 200pls)  Open(32pls – 4Way Valve On) or Open(1950pls – 4Way Valve Off)
→ EEV operation sound and vibration are larger than the normal operation state when close signal is
 기구적으로 Full Close 상태에서 Close 신호가 들어가면 EEV 동작음 및 진동이 커짐(Full Close 상태 확인)
entered in full close state
 EEV 기구부가 구속된 상태에서 동작 신호(Close 및 Open)가 전달되면 정상 운전 상태보다 동작음 및 진동이 커짐.
→ When the operation signal (close and open) is transmitted while the EEV mechanism is in the
※ 구속 상태에서 동작 시키기 위한 필요 운전 전류 증가
※ EEV가 정상일 때 리셋을 여러 번 진행하면 Full Close 상태로 초기화 됨.
constrained state, the operation sound and the vibration are larger than the normal operation state
* If EEV is normal and reset several times, it is reset to full close state
② Harness 단자 접촉 불량 – 선간 저항 측정하여 확인 필요
적 불량 판단 방법
2. Check the resistance between coil terminal
LGE Internal Use Only
* EEV Resistance Spec
Coil terminal color Resistance
red white
red orange
0pls + 200pls)  Open(32pls – 4Way Valve On) or Open(1950pls – 4Way Valve Off)
brown yellow
se 신호가 들어가면 EEV 동작음 및 진동이 커짐(Full Close 상태 확인)
150Ω ± 15
brown blue
신호(Close 및 Open)가 전달되면 정상 운전 상태보다 동작음 및 진동이 커짐.
white orange
요 운전 전류 증가
yellow blue
행하면 Full Close 상태로 초기화 됨.
③ EEV 불량 판정 Kit 사용
측정하여 확인 필요 3. Use the EEV failure judgment kit
< 기어식 EEV >
158
_TROUBLE SHOOTING GUIDE BOOK
LGE Internal Use Only
< 기어식 EEV > < 직동식 EEV >
< 직동식 EEV >
3.2 Checking Method (Flow Chart)
■ Outdoor Unit EEV
Checking start
Powered up for the Power is normally
No
first time, feel the initial supplied to the outdoor
vibration? EEV?
Yes
There is a temperature
difference between front
Yes
Check valve is OK?
and rear of the outdoor EEV
during normal cooling
mode?
No
There is a temperature
difference between front No
and rear of the outdoor EEV
during normal heating
mode?
Yes
Replace outdoor unit EEV
No malfunction of outdoor EEV
No
Replace PCB
No
Replace check valve
Yes
Yes
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