Lennox Y6334, Руководство по обслуживанию

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58
Installation and Maintenance
Service Manual
(9) Malfunction of Failure Start-up of Compressor (LC)
Main check point:
Whether the compressor wires are connected correctly?
Whether the stop time for compressor is enough?
Whether compressor is damaged?
Whether the refrigerant-charging volume is superfluous?
Malfunction diagnosis process:
Energize and turn
on the unit
Whether the stop time for
compressor is more than 3min?
Whether compressor wires are
connected correctly?
The stop time for unit is not
enough; high pressure and
low pressure of system are
unbalanced; please wait for
3min and then restart up the unit
Whether the refrigerant volume
is superfluous?
Please charge the refrigerant
according to Service Manual
Is malfunction eliminated?
Replace main board of
outdoor unit
Is malfunction eliminated?
Replace compressor
End
Connect compressor wires
according to wiring diagram
Is malfunction eliminated?
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes