Midea MUE-18HRFNX-QRD0 Technical Manual page 107

Drainage Test
a. Ensure the drainpipe flows smoothly. New buildings
should perform this test before finishing the ceiling.
b. Remove the test cover. Add 2000ml of water to the tank
through the attached tube.
c.Turn on the main power switch and run the air
conditioner in COOL mode.
d. Listen to the sound of the drain pump to see if it makes
any unusual noises.
e. Check to see that the water is discharged. It may
take up to one minute before the unit begins to drain
depending on the drainpipe.
f. Make sure that there are no leaks in any of the piping.
g. Stop the air conditioner. Turn off the main power switch
and reinstall the test cover.
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