Eev Control - LG Universal System Air Conditioner Service Manual

Outdoor Units

1.3 EEV Control

1) Superheating control (Cooling Mode)
- Superheating : T superheating = Tout – Tin = 2°C
- LEV pulse up : T superheating > 2°C
- LEV pulse down : T superheating < 2°C
2) Target Temperature Control (Cooling mode)
- In case, outdoor temperature > 39°C
- Target superheating : T target = Tin = 18°C
- LEV pulse up
- LEV pulse down
3) Target Temperature Control (Heating mode)
- LEV pulse up : T target > Tout
- LEV pulse down : T target < Tout
4) LEV pulse change Value
8 pulse (P1-P0 > 4°C)
4 pulse (4°C ≥P1-P0 > 3°C)
2 pulse (3°C ≥P1-P0 > 1°C)
128 Universal System Air Conditioner
: T target < 18°C
: T target > 18°C