Specifications

Troubleshooting SiBE04-624
196 Service Diagnosis
2.37 Fan Motor System Fault / Fan Lock
Remote
Controller Display
P9
Outdoor Unit LED
Display
A5 55
Method of
Malfunction
Detection
During humidification fan motor running, fan motor system fault is identified based on the fan
speed (rpm) detected by Hall IC.
Malfunction
Decision
Conditions
<Humidification fan>
When fan speed does not reach 100 rpm within 7 sec. after fan motor start up.
Supposed
Causes
<Humidification fan>

Defective motor for humidification fan

Breakage of relay harness or loose connector

Detection fault of fan speed due to defective outdoor unit PCB
Troubleshooting
Check No.23
Refer to P.211
(R6019)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
YES
YES
YES
Reconnect properly.
Replace hymidifying fan
assembly.
Replace outdoor fan,
humidification fan, outdoor
unit PCB.
Replace outdoor unit PCB.
Procedure complete.
Is humidification
fan harness S72
connected?
<Others>
<Humidification fan>
<Humidification fan>
Rotate fan by hand
after removing it
Check No.23
Check for the rotation pulse
input of outdoor unit PCB
NO
NO
NO
NO
Does it rotate?
Stop
Is fuse for
power supply of fan(FU2)
blown?
Does it rotate smoothly?
After assembling, run the fan
Run the humidifying operation.