LG Single "A" - Page 68

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Only for training and service purposes

LGE Internal Use Only

Part 3 Control logic

• Cooling Mode

1) Superheating control (Main control)

- Superheating : T superheating = Tout – Tin = 2˚C(Option)

- LEV pulse up : T superheating > 2˚C

- LEV pulse down : T superheating < 2˚C

2) Discharge Superheating Control (Reliability control)

- Dis Superheating : T dis_superheating = T dis – T pipe > 20˚C(Option)

- LEV pulse down : T dis_superheating < 20 (Option)˚C

T dis_superheating > 24(Option)˚C → Back to main control

• Heating Mode

1) Superheating control (Main control)

- Superheating : T superheating = Tsuc – Tpipe = 1˚C(Option)

- LEV pulse up : T superheating > 1˚C

- LEV pulse down : T superheating < 1˚C

2) Discharge Superheating Control (Reliability control)

- Dis_Superheating : T dis_superheating = T dis –((Tin+Tout )/2)> 15˚C(Option)

- LEV pulse down : T dis_superheating < 15˚C

T dis_superheating > 20˚C → Back to main control

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