Troubleshooting (Inverter) Si-95
116 Troubleshooting Inverter K Series
4.2 Outdoor Unit: Inverter Instantaneous Over-Current
Remote Controller
Display
LL
LL
55
55
Supposed Causes ■ Defect of compressor coil (disconnected, defective insulation)
■ Compressor start-up malfunction (mechanical lock)
■ Defect of inverter unit
Troubleshooting Compressor inspection
∗ If inverter output voltage is measured by tester, the displayed voltage is higher than artual voltage.
(VF064)
Inverter
output voltage
check
Inverter output voltage
is not balanced.
(Normal if within ±5 V [TAL],
±8 V [Y1, YAL])
(Note) Must be
measured when
frequency
is stable.
Replace the compressor.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration and
operating status of the compressor.
NO
Replace the inverter unit.
YES
YES
The compressor's
coil is disconnected or the
insulation is
defective.
NO
Disconnect
the the connection between
the compressor
and inverter.
After turning
on again, "L5" blinks again.
SI-95.BOOK Page 116 Friday, March 31, 2000 10:59 AM
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