Daikin RXYQ-TA Series Service Manual page 300

Troubleshooting by Error Code
CHECK 15
287
A
Check the
transmission wiring
between centralized
controller for any broken wire.
For details, refer to information in the
"Procedure for checking broken wires"
section.
CHECK 15
OK
Check the
transmission
wiring between main
centralized controller for
any broken wire. For details,
refer to information in the
"Procedure for
checking broken
wires"
section.
OK
Has
the main
centralized controller
setting connector been
connected?
YES
Disconnect the transmission
wiring of the main centralized
controller, 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 303.
NG
NG
NO
NO
SiUS341615E
Correct the wiring.
Correct the wiring.
Correct the connection of the
connector.
Replace the centralized
controller.
Centralized controller: Normal
It is supposed that the error
results from external factors
(e.g. noises) from other
equipment.
Service Diagnosis