Daikin RMXS-L Series Service Manual page 189

SiUS181305E
Troubleshooting
Check No.11
Push and hold the RESET
Refer to P.182
button on the outdoor unit
PCB for 5 seconds
Check the indoor unit - BP
unit connection wires.
Check the outdoor unit's HAP.
Check the voltage of the
indoor unit - BP unit
connection wires between No.
1 and No. 2, and between No
2 and No. 3.
Check No. 11
Check power supply
waveform.
Troubleshooting
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Does the
NO
malfunction occur
again?
YES
YES
Is there any wiring
error?
NO
Is LED A
NO (ON or OFF)
(HAP) on the indoor
unit PCB blinking?
YES
NO
Is HAP blinking?
YES
YES
Is the voltage 0 V?
NO
NO
Is there any
disturbance?
YES
Troubleshooting for Branch Provider (BP) Unit
Turn the power supply off
once and then back on.
Is LED A on
NO
the indoor unit PCB
blinking?
YES
Turn power supply off, and
turn on again.
NO
Is HAP blinking?
YES
Normal
(Address Setting was not
conducted)
Correct the indoor unit - BP unit
connection wires.
Defective indoor unit PCB or
malfunction of power supply
system.
Resets normally.
Could be other causes than
malfunction (for example, noise
etc.).
Defective BP unit PCB or
malfunction of power supply
system.
Could be other causes than
malfunction (for example, noise
etc.).
Replace the connection wires
between the indoor and BP units.
Replace the indoor unit PCB.
Locate the cause of the
disturbance of the power supply
waveform, and correct it.
(R15322)
180