Daikin RZQ100B8V3B Service Manual page 235

ESIE05-03
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Part 3 – Troubleshooting
Is the fan
NO
motor connector
connected?
YES
Are
connectors
connecting the
NO
control and inverter PC
board connected
securely?
YES
Is the
transmission
wiring between the
YES
control and inverter
PC board
disconnected?
NO
Disconnect the fan motor
connector, and turn on again.
Is "E7"
YES
displayed on the remote
controller? (Is "LC" not
displayed?)
NO
Is the
microcomputer
NO
normal monitor (green) on
inverter PC board
blinking?
YES
Is the
microcomputer
NO
normal LED on control
PC board blinking?
YES
Error Codes: Outdoor Units
Connect the connector, and turn
on again.
Connect the transmission wiring,
and turn on again.
Fix the disconnection, and turn
on again.
Replace the fan motor.
Inverter transmission
malfunctioned due to the
malfunction of fan motor.
Replace the inverter PC board.
Replace the control PC board.
Check for faulty connector
connection in the transmission
wiring and for clamps with high
tension line.
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