Troubleshooting
SiBE81-909
62
Humidifying Air Purifier
7.4.6 Humidity is not increased, or the humidity sensor lamp is not changed.
1
Models Covered
5
Troubleshooting
MCK75JVM-K
Diagnosis
Remedy
This is not a failure.
Replace the humid-
ity sensor PCB or
the operation PCB.
Go to
on
P. 64.
Connect.
[S3] [CN1]
Replace the har-
ness.
Replace the humid-
ity sensor PCB, the
display PCB, or the
operation PCB.
Go to
on
P. 64.
2
Method of Mal-
function Detection
3
Malfunction Deci-
sion conditions
4
Supposed Causes
•
The humidity sensor PCB is
defective.
•
The display PCB is defective.
•
The operation PCB is defective.
•
The connector is improperly con-
nected.
•
The harness is broken.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Do the 4 humidity
switching lamps
simultaneously
blink?
Check humidity in the
installation environment.
Move the unit to other
humidity environment
such as another room.
Is the connector of
the humidity sensor
PCB connected?
Is the harness broken?
Is humidity in the
display changed?
No
Yes
No
Yes
No
Yes
No
Yes
Check1
Check1