Daikin RQYQ140-180PY1 Service Manual page 194

Troubleshooting by Remote Controller
Troubleshooting
185
A
Check the
transmission wiring
between centralized
controllers for any broken wire.
For details, refer to information in
the "Procedure for checking
broken wires" section.
(Refer to P.202)
Normal
Check the
transmission
wiring between master
centralized controller for any
broken wire. For details, refer to
information in the "Procedure for
checking broken wires"
section (Refer to
P.202)
Normal
Has the
master centralized controller
setting connector been
connected?
YES
Disconnect the transmission
wiring of the master centralized
controller, and then check the
voltage between the
transmission terminals (F1 and
F2) of the master unit
transmission equipment using
a tester.
Is the
voltage between
the terminals F1 (+)
and F2 (-) in the range of
15.2 to 17.6
VDC?
YES
Abnormal
Abnormal
NO
NO
SiBE341001
Correct the wiring.
Correct the wiring.
Correct the connection of the
connector.
Replace the centralized
controller.
Centralized controller: Normal
It is supposed that the
malfunction results from
external factors (e.g. noises)
from other equipment.
Troubleshooting