LG Single A Svc Manual page 48

• 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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Part 3 Control logic
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