Troubleshooting (OP: Unified ON/OFF Controller)
Si33-105
214
Troubleshooting R407C PLUS Series Heat Recovery System
8. Troubleshooting (OP: Unified ON/OFF Controller)
8.1
Operation Lamp Blinks
Remote
Controller
Display
Operation lamp blinks
Supposed
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.
Fix the wiring correctly.
Fix the wiring correctly.
Connect the connector
correctly.
Replace the central PC board.
Reset power supply for all
optional controllers for
centralized control
simultaneously.
NO
YES
NO
YES
YES
NO
YES
Turn the power supply of the
indoor unit on.
YES
NO
NO
YES
NO
YES
NO
Has a once
connected indoor unit been
removed or its address
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.
Summary of Contents for R407C PLUS
Page 1: ...System R407C PLUS Series Heat Recovery System Si33 105 Service Manual ...
Page 11: ...Introduction Si33 105 x ...
Page 41: ...Specifications Si33 105 30 Specifications R407C PLUS Series Heat Recovery System ...
Page 147: ...Test Operation Si33 105 136 Test Operation R407C PLUS Series Heat Recovery System ...
Page 263: ...Si33 105 iv Index ...