Troubleshooting for BP Unit SiBE18-821_C
380 Troubleshooting
Troubleshooting
Check No.14
Refer to P.382
NO
YES
NO
YES
Turn the power supply off
once and then back on.
Turn power supply off, and
turn on again.
NO
YES
NO
NO
YES
YES
NO (ON or OFF)
(R13014)
Defective indoor unit PCB or
malfunction of power supply
system.
Replace the indoor unit PCB.
Locate the cause of the
disturbance of the power supply
waveform, and correct it.
Resets normally.
Could result from external cause
(e.g. noise).
Replace the connection wires
between the indoor and BP units.
Is LED
A (HAP) on the indoor unit
PCB blinking?
Is LED A on
the indoor unit PCB
blinking?
NO
YES
Defective BP unit PCB or
malfunction of power supply
system.
Could result from external cause
(e.g. noise).
Is HAP blinking?
Is HAP blinking?
YES
Normal
(Address Setting was not
conducted)
Does the
malfunction occur
again?
NO
Correct the indoor unit - BP unit
connection wires.
Is there any wiring
error?
Is the voltage 0 V?
Is there any
disturbance?
Push and hold the RESET
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. 14
Check power supply
waveform.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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