Samsung AC NN4SEC Series User & Installation Manual page 27

Performing leak test
1. Check the leak test at the connection part of the flexible hose and the
distributing pipe (PVC).
1) Connect a general hose to the connection part of the flexible hose of
the indoor unit, and pour in some water.
2) After pouring some water, reassemble the rubber cap on the
connection part of a flexible hose of the indoor unit and tighten it with
a band firmly to prevent leakage.
3) Check the leak test at the part where the adhesive for the flexible
hose and the distributing pipe is used.
CAUTION
• The leak test should be performed for more than 24hours at least.
2. Check the condensed water drainage.
1) Pour about 2 liters of water into the indoor unit drain board as shown
in the picture.
2) When the electric cable connection is completed
Turn the indoor unit and outdoor unit on.
Operate the Cool mode.
CAUTION
• Only in Cool mode, you can check the correct operation of the drain pump.
When the electric cable connection has not been completed.
Remove the control box cover of the indoor unit.
Connect the power supply of 220-240V, 50Hz to L, N terminal.
 Reassemble the control box cover and turn on the indoor unit.
CAUTION
• When the float switch is not detected due to insufficient water on the drain board, the drain pump
will not work.
• If power supply is directly connected to L, N terminal, communication error message might appear.
• After completing the drainage check, turn the unit off and disconnect the power supply.
• Reassemble the control box cover.
3) Check whether the drain pump works correctly.
4) Check whether the drainage is performing correctly at the end of the drain pipe.
5) Check for leakage at the drain pipe and drain pipe connection part.
6) When leakage occurs, check whether the indoor unit is level and check the drain hose connection part,
drainpipe connection part and drain pump connection.
7) When the drainage check is completed and the condensed water remains on the drain board, remove the water.
Water leakage
check part
Hose
English 27