Troubleshooting - Daikin MCK75JVM-K Service Manual

SiBE81-909
7.4

Troubleshooting

7.4.1 Equipment does not operate, or operation lamps does not light.
Caution
1
Models Covered
MCK75JVM-K
2
Method of Mal-
function Detection
3
Malfunction Deci-
sion conditions
4
Supposed Causes
•
The unit is not turned on.
•
Unspecified voltage is used.
•
The front panel is broken. (The
protrusion on the front panel is
broken.)
•
The power supply PCB is
defective.
(The front panel switch is
defective.)
•
The operation PCB is
defective.
Humidifying Air Purifier
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
5
Troubleshooting
Is the power cord plugged in?
Or is the breaker "ON"?
Is the panel closed
Is the water supply
lamp blinking?
Do other appliances operate?
Is rated voltage within ±10%?
Remove the front panel.
Is the protrusion on the rear
panel damaged?
Front panel switch operation check
Press the front panel switch with a
thin stick, then press ON/OFF switch
after 5 seconds.
Does the front panel
operation lamp light?
Diagnosis
No
Yes
No
firmly?
Yes
Yes
No
No
Is there power failure?
Yes
Is 220-240V supplied?
No
Yes
Yes
No
Yes
No
Troubleshooting
Remedy
Plug in the power
cord.
Set the breaker to
"ON".
Close the upper
part of the panel
firmly.
Go to "7.2.2 The
water supply lamp
blinks"
Yes
Wait for power res-
toration.
No
When unspecified
voltage is applied,
No
replace the power
supply PCB.
(The varistor or the
Yes
fuse may be dam-
aged.)
Go to Check1
P. 64.
Contact power
company.
Replace the front
panel.
*The protrusion on the
front panel is broken.
Protrusion
Rear side
Replace the front
panel. (The front
panel switch may
not work due to
deformity).
Replace the power
supply PCB or the
operation PCB.
Check1
Go to
P. 64.
on
on
57