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3-5. Checking the Drainage
3-5-1. Horizontal Installation Only
After wiring and drain piping are completed, use the following procedure to check that the water
will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled
water.
(1) Connect power to the power terminal board (L, N terminals) inside the electrical component
box.
(2) Remove the tube cover and slowly pour about 1,200 cc of water through the opening into
the drain pan to check drainage.
(3) Short the check pin (CHK) (6P : 1-4) on the indoor unit control PCB and operate the drain
pump. Check the water flow through the transparent upper drain port and see if there is any
leakage.
* If the check pin (CHK) (6P : 1-4) is shorted, the fan starts rotating at high speed and could
cause injury.
(4) When the drainage check is complete, open the check pin (CHK) (6P : 1-4) and remount
the insulator and the cap onto the drain inspection port.
Water intake
Drain inspection port
Transparent upper drain port
Cap
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