Daikin FFQ60BV1B x 2 - Page 465

Si20-701_B Troubleshooting by Remote Controller
458
Note:
∗1: Check the correct indoor-outdoor unit transmission
wiring and outdoor-outdoor unit transmission wiring
with the installation manual.
YES
Mount the DIII-
NET expander
adaptor.
Disconnect
the outdoor-
outdoor unit
transmission wiring to
create the one-system
status, and then
check whether or
not the system
is normal.
Does
a "UH" error
occur for all indoor
units in the system?
NO
YES
NO
Replace the
indoor unit PCB.
Replace the
outdoor unit PCB
(A1P).
A