LG LAN091CNP, LAU091CNP, LAN121CNP - Checking the Drainage and Forming the Pipings; Checking the Drainage

Service Manual 27
Checking the drainage and forming the pipings
Checking the drainage and forming the pipings
Checking the Drainage
To check the drainage.
1. Pour a glass of water on the evaporator.
2. Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the
drain exit.
Drain piping
1. The drain hose should point downward for easy drain
flow.
2. Do not make drain piping like the following.
Downward slope
Do not raise
Accumulated
drain water
Tip of drain hose
dipped in water
Air
Waving
Water
leakage
Water
leakage
Ditch
Less than
50mm gap
Water
leakage
(mm
2
)