Panasonic S-22MU1E5 Installation Instructions Manual page 13

Over
100 mm
Plastic container
for water intake
Water
(Approx. 500 cc)
(3) Short the check pin (CHK) on the indoor control board and
operate the drain pump. Check the water flow through the
transparent drain pipe and see if there is any leakage.
(4) When the check of drainage is complete, open the check
pin (CHK) and remount the tube cover.
CAUTION
Be careful since the fan will start when you short the pin on
the indoor control board.
Water drain
Drain pan outlet
Fig. 3-11
12