Daikin MC401VE, Руководство по обслуживанию

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Troubleshooting SiE74-202
24 Troubleshooting
1.4 Photocatalytic Operation does not Activate
Method of
Malfunction
Detection
Malfunction
Decision
Conditions Photocatalytic operation does not activate during equipment operation (lamp does not light).
Supposed
Causes
Faulty lamp
Faulty transformer
Faulty PCB
Troubleshooting
Check power supply voltage
between one of the pins for X9A
and X10A.
Refer the drawing next page.* *Make sure to press the door switch
(safety switch) DS1 before
checking voltage.
Check connector and harness
connection.
Correct connection
Replace control PCB (A1P)
Replace control PCB A1P.
•
Check connector X4A and
CN1.
•
Replace wire harness
between X4A of A1P and
CN1 of A3P.
Is connection
normal?
(Z0008)
Is voltage
between 220 to 240
VAC?
Check power supply of inverter
PCB. (A3P-CN1)
Replace lamp or inverter
PCB A3P.
Check transformer secondary
voltage
(A1P-X4A).
Is voltage
higher than 12
VDC?
Is voltage
higher than 12
VDC?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
YES
YES
NO
NO
NO
YES
NO