Malfunction Of Transmission Between Optional Controllers For Centralised Control - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting (OP: Central Remote Controller)
6.3 Malfunction of Transmission between Optional Controllers for Centralised
Control
M8 M8 M8 M8
Remote Controller
Display

„ Malfunction of transmission between optional controllers for centralised control

Supposed Causes
„ Defect of PC board of optional controllers for centralised control
Troubleshooting
392
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Has a once
connected optional
controller for centralised control
been disconnected or its
address
changed?
NO
Is
the power supply
turned on for all optional
controllers for
centralised control?
YES
Is
the reset switch
of all optional controllers
for centralised control set to
''normal?''
YES
Is
transmission wiring
disconnected or wired
incorrectly?
NO
YES
NO
NO
YES
Troubleshooting Urban Multi "MX1R, ME1R Series" Using R-407C
PACD011001C2
Reset power supply simultaneously for
all optional controllers for centralised
control.
Turn on power supply for all optional
controllers for centralised control.
Set reset switch to "normal."
Fix the wiring correctly.
The PC board of one of the optional
controllers for centralised control is
defective. Try turning on/off using each
optional controllers for centralised
control, and replace the PC board of
the one that is unable to control the
indoor unit.
(VF072)