Daikin VRV-WIII RWEYQ72PTJU Service Manual page 245

SiUS30-1301
Service Diagnosis
A
Check
the
transmission
wiring between
centralized control
equipment for any broken
wire. For details, refer to
information in the
"Procedure for
checking broken
wires"
section.
Normal
Check
the
transmission
wiring between
main centralized control
equipment for any broken
wire. For details, refer to
information in the
"Procedure for
checking broken
wires"
section.
Normal
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 main 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
Troubleshooting by Indication on the Remote Controller
Abnormal
Abnormal
NO
NO
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.
237