Outdoor Unit: Inverter Stall Prevention, Compressor Seized - Daikin VRV K Manual

SI-95.BOOK Page 118 Friday, March 31, 2000 10:59 AM
Troubleshooting (Inverter)
4.4

Outdoor Unit: Inverter Stall Prevention, Compressor Seized

L L L L 9 9 9 9
Remote Controller
Display
I Defect of compressor
Supposed Causes
I Pressure differential start
I Defect of inverter unit
Troubleshooting
118
The
difference
between high and low
NO
pressure when starting is less
than 2 kg / cm² =
(0.196 MPa).
YES
Disconnect
the the connection between
the compressor
and inverter.
Inverter
output voltage
check Inverter output
NO
voltage is not balanced.
(Normal if within ±8 V [Y1])
(Note) Must be
measured when
frequency
is stable.
After turning
on again, "L9" blinks
again.
YES
Si-95
Unsatisfactory pressure equalization
Check refrigerant system.
Replace the inverter unit.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration and
operating status of the compressor.
(VF066)
Troubleshooting Inverter K Series