Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
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4.3.3 Test of Drainage System
(1) Please test drainage system after electric work is finished.
Inject approximately 1L purified water to drain pan from air vent, ensure that not to splash the
water over the electrical components (e.g. water pump. etc.).
1) Inject approximately 1L purified water to drain pan from air vent, ensure that not to splash
the water over the electrical components (e.g. water pump. etc.).
2) In case of commissioning finished, please energize the IDUs and switch to cooling or dry
mode, meanwhile, the water pump operates, you can check the draining through the drain
socket.
3) If communication wire is not connected, communication malfunction “C0” will occur after
60s of energizing. In this case, the water pump operates automatically. Check if the water
pump drains normally through drainage port. The water pump will stop automatically after
running for 10mins.
(2) During the test, please carefully check the drainage joint, and make sure no any leakage
occur.
(3) It’s strongly recommended to do the drain test before ceiling decoration.
Unit: mm (inch)
Fig.4.3.9
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