Panasonic U-26PE1U6 Technical Data & Service Manual page 161

6-39. Checking the Drainage
Be careful because the fan will start when you short the pin on the indoor control board.
After wiring (refer to "1-12. 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. 1-130)
(3) Short the check pin (CHK) on the indoor control board and operate the drain pump. Check the water flow through the transparent
dr ain 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) Checkpoint after installation
After installation of indoor and outdoor units, panels and electrical wiring, check the following items.
Drainage check
Over 3-15/16"
(100 mm)
Plastic container
for water intake
Water (Approx. 0.3gal (1,200 cc))
Fig. 1-130
Checkpoint
Checkpoint
Make sure whether indoor and outdoor units are
1
correctly installed.
2 Make sure whether gas leakage is tested.
Make sure whether insulation is completed.
3
(Refrigerant piping and drain piping)
Make sure whether drain water is running
4
smoothly.
Make sure whether the power voltage matches
5
the nameplate.
Make sure whether there is miswiring or incorrect
6
connection.
Make sure whether the ground construction is
7
completed.
Make sure whether the wire gauge is followed by
8
the recommended specifications.
Make sure whether the air intake and air outlet
9 of the indoor and outdoor units are sealed by
obstacles.
Drain pan outlet
Be careful because the fan will start when you short the pin on the
indoor control board.
CHK
Indoor Unit control PC board
CAUTION
Symptom
Fall, vibration, noise
No cooling, no heating
Water leakage
Water leakage
Inoperative, burnout
Inoperative, burnout
Ground leakage
Inoperative, burnout
No cooling, no heating
1-153
1. Specifications
Check Remark
1