Daikin SkyAir RZF-A Series Service Manual page 195

SiME281906E
Troubleshooting
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is any broken
wire or wrong wiring
found?
NO
Was the
indoor unit
disconnected
after connected or central
control group No. for
indoor unit
changed?
NO
Check
the indoor
unit for which UE
is displayed. Is the
transmission error UE
caused on all
indoor units?
YES
Check the
transmission wiring
between main centralized
controller for any broken
wire or wrong
wiring.
OK
Has the
main centralized
controller setting connector
been connected?
YES
YES
YES
Has the
setting of central
control group No. been
NO
made with the indoor unit on
which the UE
occurred?
YES
NG
NO
Troubleshooting by Error Code
Correct the wiring.
Reset the power supplies of
every centralized controller.
NO
Make correct setting of the
central control group No.
Replace the indoor unit PCB.
Correct the wiring.
Correct the connection of the
connector.
Replace the centralized
controller.
190