Daikin VRVII Manual page 276

Troubleshooting by Indication on the Remote Controller
A
Is
220 ~ 240 V
of power reaching
the magnetic contact
switch coil?
NO
Does
the voltage
between
terminals P2 (or P3)
and N3 gradually rise to
556 VDC (Y1, YL) or
283 VDC (TL)
after turning
ON?
NO
Is 220 ~
240 V at the
connector inverter
PCB.
NO
Is
220 ~ 240 V
at the connector
outside PCB side?
YES
YES
YES
YES
NO
Replace the
magnetic contact
switch.
Replace the
inverter PCB.
Replace the
inverter PCB.
Replace the
outside unit PCB.
Check the
transmission
wiring between
the outside unit
PCB and inverter
unit.
271