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.
Check the connection between power supply and
terminal, is the voltage in outdoor terminal is 3 phase.
Check: whether Phase sequence error
Change the order of two of the wires to power supply.
If the problem can not be solved, the main controller panel is defective
7. Maintenance
1.During new use stage, one should check the fan operation regularly.
2.The cleaning regulation for filter mesh depends on local environment. It could be clean by vacuum dirt
exhauster or water, if heavy dust accumulates, it should use neutral detergent to clean it, and then dry it in
shady and cool place for 20 to 30 minutes and replace it.
3.Clean the core at least 2 years a time by vacuum dirt exhauster to remove dust and foreign substance in
the unit assemblies, do not touch the assemblies by exhauster and flush by water to avoid core damage.
4.Check the fan every half a year to maintain the well balance of it and check whether the axletree has
loosed.
Phase absent, phase error
Check: whether Lack of phase
Yes
Switch on the unit again.
No
Connect it well.
17
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