Daikin VRV - WII, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller SiUS30-604
200 Troubleshooting
2.32
“
L9
”
Outside Unit: Inverter Start up Error
Remote
Controller
Display
L9
Applicable
Models RWEYQ60, 72, 84MTJU
Method of
Malfunction
Detection Malfunction is detected from current flowing in the power transistor.
Malfunction
Decision
Conditions When overload in the compressor is detected during startup
Supposed
Causes
„
Defect of compressor
„
Pressure differential start
„
Defect of inverter PC board
Troubleshooting
Higher voltage than actual is displayed when the inverter output voltage is checked by tester.
Inverter
output voltage
check Inverter output
voltage is not balanced.
(Normal if within
±
5V of
power supply ) Must be
measured when
frequency
is stable.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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 PC board
NO
NO
Reset and restart.
NO
The difference
between high and low
pressure when starting
is above
29psi.
YES
YES
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode ON by
service mode.
After turning
on again, “L9” blinks
again.
(V2814)