Daikin VRV III REYQ8PY1, Service Manual

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Si37-701 Troubleshooting by Indication on the Remote Controller
Troubleshooting 335
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2831)
NO
YES
YES
After fixing incorrect wiring,
push and hold the RESET
button on the master outdoor
unit PC board for 5 seconds.
Normal
NO
Is
electricity
being introduce for
the first time after
installation or after an indoor
or outdoor unit PC
board has been
replaced?
Is
indoor - outdoor and
outdoor - outdoor unit
transmission wiring
normal?
YES
NO
Normal
NO
Does a malfunction occur?
Mount the DIII NET extension
adapter.
YES
Disconnect
the outdoor-outdoor
unit transmission
wiring to create the one-
system status, and then
check whether or not
the system is
normal.
NO
Does
a “
UH
” malfunction occur
for all indoor units in
the system?
YES
NO
Does
a malfunction
occur even after 12
minutes elapses from the
time when electricity is
introduced to indoor
and outdoor
units?
YES
Replace indoor unit PC board.
Replace outdoor unit PC
board (A1P or A3P).
Push and hold the RESET
button on the outdoor unit
PC board for 5 seconds
∗
The unit will not run for up to
12 minutes.
∗
1: Check the correct wiring “indoor-outdoor” and “outdoor-outdoor” by Installation Instruction.
∗
2: What is Auto Address?
This is the address automatically assigned to indoor units and outdoor units after initial power supply
upon installation, or after executing rewiring (Keep pressing the rewiring button for more than 4
seconds).