Daikin VRV III-S RXYMQ36 48PVJU Service Manual page 205

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Is
electricity
being introduced for
the first time after
installation or after an indoor
or outdoor unit PCB
has been
replaced?
NO
Is
indoor - outdoor unit
transmission wiring
normal?
YES
After fixing incorrect wiring, push and
hold the RESET button on the outdoor
unit PCB for 5 seconds.
Does a malfunction occur?
YES
Does
UH
a " " malfunction occur
for all indoor units in
the system?
YES
196
Does
a malfunction
occur even after 12
YES
minutes elapses from the time
when electricity is introduced
to indoor
and outdoor
units?
YES
NO
NO
NO
NO
Normal
After fixing incorrect wiring,
push and hold the RESET
button on the outdoor unit PCB
for 5 seconds.
* The unit will not run for up to
12 minutes.
Normal
Replace the indoor unit PCB.
Replace the outdoor unit PCB
(A1P).
SiUS34-907
Troubleshooting