Daikin Aurora Series Service Manual page 292

Troubleshooting by Error Code
CHECK 15
279
A
Check
the
transmission
wiring between
centralized control
equipment for any broken
wire.
CHECK 15
OK
Check the
transmission
wiring between main
centralized control
equipment for any
broken wire.
CHECK 15
OK
Has
the main
centralized control
equipment setting connector
been connected?
YES
Disconnect the transmission
wiring of the main centralized
control equipment, and then
check the voltage between the
transmission terminals (F1 and
F2) of the master unit
transmission equipment using
a multimeter.
Is the
voltage
between the
terminals F1 (+) and F2 (-)
in the range of 15.2
to 17.6 VDC?
YES
Refer to page 298.
NG
NG
NO
NO
SiUS341802E
Correct the wiring.
Correct the wiring.
Correct the connection of the
connector.
Replace the centralized
control equipment.
Centralized control
equipment: Normal
It is supposed that the error
results from external factors
(e.g. noises) from other
equipment.
Service Diagnosis