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6 Confirming drain discharge
Make sure that the Drain Water Lift-Up Kit operates normally for discharge and that there is no water leakage
from the connections.
•Be sure to confirm the above in a period of heating operation.
•Be sure to confirm the above before ceiling work is done in the case of a new construction.
•Before pouring water, be sure to confirm again the rubber plug is pushed in straight all the way.
1. Set the SWE of the control board inside the control box to ON.
2. Remove the heat exchanger cover from the indoor unit.
(Refer to 3-1 (2).)
3. Pour water into the drain pan using a kettle etc. (Approx. 2 to 3 ℓ)
When pouring, make sure that the spout of the kettle is placed into
the drain pan to prevent water overflowing from the drain pan. (If the
spout of the kettle is not placed properly, the water will be poured
outside of the unit.) (Photo 6-1)
(Note 1) If the drain discharge cannot be confirmed even after the
amount of water described above was poured, the unit
may be inclined reversely. Check that the unit is installed
properly (horizontally) with a level. Also, pouring too much
water will immerse the drain pump in water and pose a risk
of malfunctions.
(Note 2) If a submersible pump is used to pour water, adjust the
water amount with a valve so that the water amount will
not exceed 0.4 ℓ/min. Pouring too much water may result in
water leakage from the indoor unit and malfunctions of the
drain pump.
4. Turn on the main power of the indoor unit.
The drain pump will be forced to operate even if no remote controller
operation is performed.
Check the transparent drain hose to make sure that drain is
discharged.
5. When it is confirmed that drain is discharged properly, turn off the
main power, and set the SWE to OFF.
Check that all the wiring work has been completed. If so, reassemble
the drain pipe in reverse order.
(Refer to 3-1 (2)➞(1).)
Inlet water
Drain hose
Photo 6-1
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