Drainage Test - York R-410A Technical & Service Manual

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5.5) Drainage test

5.5.1 Drainage without drain pump
After finishing drainpipe installation, pour some water into the water plate to check if the
water flows smoothly.
5.5.2 Drainage with drain pump
5.5.2.1 Poke the Water Level Switch, remove the cover, and use water pipe to pour 2000ml
water into the water plate through the water inlet.
5.5.2.2 Turn on the power to cooling operation. Check the pump's operation and switch on the
Water Level Switch. Check the pump's sound and look into the transparent hard pipe in the
outlet at the same time to check if the water can discharge normally.
5.5.2.3 Stop the air conditioner running, turn off the power, and put back the cover.
Stop the air conditioner. After 3 minutes, check if it has abnormity. If the collocation of
drainpipes is illogical, the water will flow back overfull, which will cause the alarm lamp flashes,
even circumfluence from the water plate.
Keep on pouring water until it gives an alarm signal for high water level, check if the pump
drains water at once. If the water level can't fall below the alarmed water level after 3 minutes,
the air conditioner will stop (means this indoor unit stops, stand-by, but the outdoor unit still
work if there is capacity requirement). Turn off the power and drain the remained water, and
then turn on the air conditioner.
Note: the drain stopper in the main water plate is for maintenance. Stuff up the drain stopper to
prevent water leakage.
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Installation