Panasonic CU-8ME1XPK - Malfunction of Transmission between Optional Controllers for Centralised Control

PACD011001C2 Troubleshooting (OP: Schedule Timer)
Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C 397
7.3 Malfunction of Transmission between Optional Controllers for Centralised
Control
Remote Controller
Display
M8
M8M8
M8
Supposed Causes
„
Malfunction of transmission between optional controllers for centralised control
„
Defect of PC board of optional controllers for centralized control
Troubleshooting
(VF076)
Is
transmission wiring
disconnected or wired
incorrectly?
The PC board of one of the optional
controllers for centralized 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.
NO
NO
Fix the wiring correctly.
YES
YES
Has a
once connected
optional controller for
centralized control been
disconnected or
its address
changed?
Turn on power supply for all optional
controllers for centralised control.
Reset power supply simultaneously for
all optional controllers for centralised
control.
YES
NO
Is
the power supply
turned on for all optional
controllers for centralized
control?
Set reset switch to "normal".
YES
NO
Is
the reset switch
of all optional controllers for
centralized control
set to "normal"?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.