Panasonic CU-8ME1XPK - Troubleshooting (OP: Unified ON;OFF Controller); Operation Lamp Blinks

Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2
212 Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22
8. Troubleshooting (OP: Unified ON/OFF Controller)
8.1 Operation Lamp Blinks
Remote Controller
Display
Operation lamp blinks
Suppposed Causes
„
Malfunction of transmission between optional controller and indoor unit
„
Connector for setting master controller is disconnected
„
Defect of unified ON/OFF controller
„
Defect of indoor unit PC board
„
Malfunction of air conditioner
Troubleshooting
(VF079)
Is
the power supply for
the indoor unit displaying a
malfunction
turned on?
Is
transmission wiring
disconnected or wired
incorrectly?
Is
the transmission
wiring with the master
controller disconnected or
wired incorrectly?
Is the master
controller's connector for
setting master controller
disconnected?
Set the group No. correctly.
Replace indoor unit PC
board.
Replace the central PC
board.
Fix the wiring correctly.
Fix the wiring correctly.
Connect the connector correctly.
Reset power supply for all optional
controllers for centralised control
simultaneously.
NO
YES
NO
YES
YES
NO
NO
Turn the power supply of the
indoor unit on.
YES
NO
NO
YES
YES
YES
NO
Has a once
connected indoor unit been
removed or its control
range setting
changed?
Diagnose the cause with the air
conditioner's failure diagnosis
manual.
NO
YES
Is a malfunction
code displayed on the remote
controller?
Is the group
No. of malfunctioning indoor
units set?
Is transmission
with all indoor units
malfunctioning?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.