Daikin SiBE81-909, Service Manual

Page: 64 / 66

SiBE81-909 Troubleshooting
Humidifying Air Purifier 63
7.4.7 The power supply PCB or the operation PCB is at fault.
1
Models Covered
5
Troubleshooting
MCK75JVM-K Diagnosis Remedy
Replace the power
supply PCB.
Go to on
P. 64.
Replace the opera-
tion PCB.
Go to on
P. 64.
2
Method of Mal-
function Detection
Abnormality of the zero cross from
the power supply is detected.
3
Malfunction Deci-
sion conditions
When the zero cross cannot contin-
uously be detected for about 10 sec-
onds
4
Supposed Causes
•
The connector is improperly con-
nected.
•
The power supply PCB is defec-
tive.
•
The operation PCB is defective.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The 3 OFF timer lamps
simultaneously blink.
Check the connector
for connection (S108).
Correct the connection.
OK
Do the lamps above
blink again?
Yes
Is the connector
properly connected?
Yes
No
No
Check1
Check1