Troubleshooting (Op: Central Remote Controller); Malfunction Of Transmission Between Central Remote Controller And Indoor Unit - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting (OP: Central Remote Controller)

6. Troubleshooting (OP: Central Remote Controller)

6.1 Malfunction of Transmission between Central Remote Controller and Indoor
Unit
UE UE UE UE
Remote Controller
Display
„ Malfunction of transmission between optional controllers for centralised control and indoor unit
Supposed Causes
„ Connector for setting master controller is disconnected.
„ Failure of PC board for central remote controller
„ Defect of indoor unit PC board
Troubleshooting
202
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Has
an indoor unit once
YES
connected been remove
or its address
changed?
NO
Is
the power supply
NO
turned on for indoor units
displaying
malfunction?
YES
Is
transmission wiring
YES
disconnected or
wired incorrectly?
NO
Is
transmission with
NO
all indoor units
malfunctioning?
YES
Is
the transmission
wiring with the master
YES
controller disconnected
or wired
incorrectly?
NO
Is
the master controller's
YES
connector for setting master
controller
disconnected?
NO
Is the group
NO
No. of malfunctioning indoor
units set?
YES
Troubleshooting Urban Multi "MX1, ME1 Series" Using R-22
PACD011001C2
Reset power supply
simultaneously for all optional
controllers for centralised control.
Turn indoor unit's power supply.
Fix the wiring correctly.
Set the group No. correctly.
Replace indoor unit PC board.
Fix the wiring correctly.
Connect the connector correctly.
Replace the central PC board.
(VF071)