Daikin SiBE81-909 Service Manual page 61

Troubleshooting
7.4.4 DC fan locks.
Caution
1
Models Covered
MCK75JVM-K
2
Method of Mal-
function Detection
Abnormality of the fan motor is
detected by revolutions with the Hall
IC while the fan motor is running.
3
Malfunction Deci-
sion conditions
When the fan motor is not revved
up.
4
Supposed Causes
•
The fan motor is defective.
•
The power supply PCB or opera-
tion PCB is defective.
•
Foreign objects in the fan.
•
The connector is disconnected.
60
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
5
Troubleshooting
Diagnosis
All 4 airflow rate indicators
blink simultaneously.
Disconnect the power
supply plug once and wait
for 3 seconds. And then,
reconnect the power
supply plug.
Retry to operate with the
ON/OFF switch.
Airflow rate indicators
blink then go OFF.
Yes
Is there any foreign
object in the fan?
No
Yes
Is the fan motor connector
disconnected?
No
SiBE81-909
Remedy
NOTE: Turn off the
power before
unplugging the con-
nector. If the con-
nector is unplugged
with the unit turned
on, the fan motor
may be damaged.
(Turn off the power
before plugging in
connector as well.)
Remove the for-
eign objects and
restart operation.
Connect.
[S102]
Replace the fan
motor.
•
When the indica-
tors blink after
restarting,
replace the power
supply PCB or
the operation
PCB.
Check1
Go to on
P. 64.
Humidifying Air Purifier