AUX air conditioner service manual
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Solution: adjusted position of water drain tube.。
Experience Conclusion: pay attention to details during installation and have water drain test after
installation.
Case 7: Water Drain Tube wasn’t wrapped tightly enough and leaked condensate
Unit Model: ASW-07B4/HA
Phenomena： After air conditioner run for half an hour, water drain tube of indoor unit was full of
condensate and leaked water.
Cause analysis: according to client, indoor unit of newly installed KF-23GW/I1Y air conditioner
leaked. We turned on the unit for half an hour, 2m water drain pipe of indoor unit was covered by
beads; we noticed that the office neared riverside, so environment humidity was relatively high, in
addition, room was also large and closeness was poor, so a great deal of condensate was discharged
from indoor unit; because drain tube was only wrapped by a layer of adhesive tape, air condensed on it
and produced water.
Solution: wrapped the outer wall of drain tube with more insulation sponge, and tied the insulation
sleeve tightly
Experience Conclusion: in southern area with high humidity, heat insulation sponge shall be wrapped
properly.
Case 8: Water drain tube was broken and leaked water
Unit Model: ASW-H09A4/M
Phenomena：Turned on air conditioner for a while, indoor unit discharged a large amount of water, but
outdoor drain tube didn’t discharge condensate water.
Cause Analysis: the main reason of leakage was that water drain tube connecting indoor unit and
water collection pan as well as drain tube outside the unit were bitten through by mice.
Reasons for damage during installation:
⑴ Water drain tube is broken when it is pulled out from indoor unit( especially cabinet unit), because
steel casing parts are too sharp without folded edges or other protection measure;
⑵ When connection pipes and water drain pipe penetrate the wall, if hole on the wall is not large
enough, it may break the drain pipe;
⑶ Other reasons: Drain pipe is of poor quality and thickness is very thin; drain pipe connecting with
water collection pan is of poor quality, and leaks condensate; drain line is bitten through by mice and
so on.
Solution: replace broken water drain tube, check if drain tube will be broken again easily and take
proper protective measures.
Experience Conclusion: take cautious steps to protect drain tube and do not damage it during
installation.
Case 9: System leaked water because of refrigerant lack
Unit Model: ASW-H09A4/A
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