Troubleshooting by Indication on the Remote Controller
111
Note:
∗
1. Pressure difference between high pressure and low
pressure before starting.
∗
2. The quality of power transistors/diode modules can
be judged by executing
.
Refer to P.354.
Check
if the inverter
output voltage
between 3 phases is
within ± 5V.
Has the
compressor
started up at high
differential pressure
(
∗
1)?
NO
NO
YES
Defective
pressure
equalizing
Check the
refrigerant
system.
Measure the inverter
output voltage (*2).
Note: Measurement
should be made while the
frequency is stable.
Remove the connection
between the compressor
and inverter. Set the
power transistor check
mode ON using “Setting
mode (2)” of the outdoor
unit PCB.
Replace the
outdoor unit
inverter PCB.
YES
Replace the
inverter
compressor.
A
Power ON
CHECK 4
CHECK 4
Содержание VRVII
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