LG LSC27990TT Service Manual page 51

TROUBLE DIAGNOSIS
CLAIMS. HOW TO CHECK
3. Poor Cooling
CAUSES AND CHECK POINTS.
1) Refrigerant Partly leaked. • Weldjointleak.
Partsleak.
heater
Cord
heater
i Defrostheaterdoes not Parts
generateheat. disconnected.
2) Poor defrosting capacity.
F Drain path (pipe)clogged. Injectadiabatics intodrain Inectthroughthe
i h°se" i hole.
i [ Sealwithdrain.
i Foreignmaterials Adiabatics lumpinput.
i penetration. Damagebya screwor
clamp.
i Otherforeignmaterials input.
Capdrainisnot disconnected.
_ Plate i Wireiscut.
i
- Heatingwire.
- Contactpoint
betweenheating
andelectricwire.
Dentbyfin evaporator.
Poor t erminal c ontacts.
Wireis cut.
- Leadwire.
- Heatingwire.
- Contactpoint
betweenheatingand
electricwire.
Heating wireiscorroded
i - penetration.
Water
Badterminal c onnection.
• Check visually.
• Check terminal
Conduction: OK.
No conduction: NG.
Ifwire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance
p=V9
R
R=V 2
P
- 51 -