Troubleshooting (Inverter) Si-95
118 Troubleshooting Inverter K Series
4.4 Outdoor Unit: Inverter Stall Prevention, Compressor Seized
Remote Controller
Display
LL
LL
99
99
Supposed Causes ■ Defect of compressor
■ Pressure differential start
■ Defect of inverter unit
Troubleshooting
Inverter
output voltage
check Inverter output
voltage is not balanced.
(Normal if within ±8 V [Y1])
(Note) Must be
measured when
frequency
is stable.
Unsatisfactory pressure equalization
Check refrigerant system.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration and
operating status of the compressor.
YES
Replace the inverter unit.
NO
NO
The
difference
between high and low
pressure when starting is less
than 2 kg / cm² =
(0.196 MPa).
YES
Disconnect
the the connection between
the compressor
and inverter.
After turning
on again, "L9" blinks
again.
(VF066)
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