Panasonic S-26PU2U6 Installation Instructions Manual page 11

3-5-3. Checking the Drainage
Be careful because the fan will start when you short the pin on the indoor control board.
After wiring (refer to "4. ELECTRICAL 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 (L1, L2 terminals) inside the electrical component box.
(2) Slowly pour about 0.3 gal (1,200 cc) of water into the drain pan to check drainage. (Fig. 3-12)
(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.
(5) Confirm the "Checkpoint" under the section "8. PRECAUTIONS ON TEST RUN" after installation of indoor and outdoor units,
panels and electrical wiring.
CAUTION Be careful because the fan will start when you short the pin on the indoor control board.
Drainage check
Over 3-15/16" (100 mm)
Plastic container
for water intake
CHK
Indoor Unit control PC board
11
Drain pan outlet
Water (Approx. 0.3gal (1,200 cc))
Fig. 3-12