Troubleshooting by Remote Controller
SiBE281013
110
Service Diagnosis
Troubleshooting
Note:
If "
A3
" is detected by a PCB without X15A, the PCB is defective.
Is the unit a cassette type?
NO
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
YES
YES
NO
NO
Connect the short circuit
connector.
NO
YES
YES
YES
Replace the short circuit
connector.
NO
Replace the indoor unit PCB.
Connect the drain pump.
YES
NO
Defective drain system
NO
YES
YES
Connect the float switch.
NO
Replace the float switch.
YES
Replace the indoor unit PCB.
Replace the drain pump.
NO
NO
YES
Remove the float switch from X15A,
short circuit X15A, and restart
operation.
Replace the indoor unit PCB.
Is the optional
drain pump kit installed?
Is the short
circuit connector connected
to X15A on the indoor
unit PCB?
Is a drain
pump connected to the indoor
unit PCB?
Check the
continuity of the short circuit
connector. Is there
continuity?
Does the
drain pump work after restarting
operation?
Set to "emergency"
and check the voltage of X25A.
220-240 VAC?
Is the drain water level
abnormally high?
Is the float switch
connected to X15A?
Error is displayed again?
