Troubleshooting (Op: Unified On/Off Controller); Operation Lamp Blinks - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting (OP: Unified ON/OFF Controller)

8.

Troubleshooting (OP: Unified ON/OFF Controller)

8.1

Operation Lamp Blinks

Remote Controller

Operation lamp blinks

Display
„ Malfunction of transmission between optional controller and indoor unit
Suppposed Causes
„ Connector for setting master controller is disconnected
„ Defect of unified ON/OFF controller
„ Defect of indoor unit PC board
„ Malfunction of air conditioner
Troubleshooting
400
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is a malfunction
code displayed on the remote
controller?
NO
Has a once
connected indoor unit been
removed or its control range
setting changed?
NO
Is
the power supply for
the indoor unit displaying a
malfunction
turned on?
YES
Is
transmission wiring
disconnected or wired
incorrectly?
NO
Is transmission
with all indoor units
malfunctioning?
YES
Is
the transmission
wiring with the master
controller disconnected or
wired incorrectly?
NO
Is the master
controller's connector for
setting master controller
disconnected.
NO
YES
YES
NO
YES
Is the group
NO
No. of malfunctioning indoor
units set?
YES
YES
YES
Troubleshooting Urban Multi "MX1R, ME1R Series" Using R-407C
PACD011001C2
Diagnose the cause with the air
conditioner's failure diagnosis
manual.
Reset power supply for all optional
controllers for centralised control
simultaneously.
Turn the power supply of the
indoor unit on.
Fix the wiring correctly.
NO
Set the group No. correctly.
Replace indoor unit PC
board.
Fix the wiring correctly.
Connect the connector correctly.
Replace the central PC board.
(VF079)