Specifications

Troubleshooting by Indication on the Remote Controller SiUS39-601
140 Troubleshooting
Troubleshooting
Check the installation
conditions.
Is the stop valve open?
NO
Is the UVWN wiring
normal?
NO
NO
NO
NO
Is high
differential pressure
starting? (72psi
or more)
YES
YES
YES
Check and see
whether compressor is
short-circuited or
ground.
YES
YES
Are inverter
output voltages the same
for 3 phases?
Does low or
high pressure vary
even instantaneously when
restarting
compressor?
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Open the stop valve.
Connect correctly.
Remedy the cause.
Replace the compressor.
Replace the inverter PC
board (A2P).
Replace the compressor.
(V2793)
NO