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Part # 4521635 (03/04/08)Page 14
Flow chart to fault nding
Unit does not
operate
Check
Power Supply
Connection OK?
No
Yes
Connect Unit
Is there any
LED
Indication?
No
Short circuit
connection
Potentiometer?
Check
potentiometer
connection
Check LED
Yes
No
Disassemble
Cooker top
assembly
Replace LED
Defective
OK
Check fuse
T10A
Check rectier
DefectIve
Replace
Power Board
OK
OK
Check electric
Potential DC
Volts
Defective
Check IGBT
Transistor’s
Replace
Power board
Error
Check fuse
T1A
OK
Check power
Print (board)
visually
Check wiring
Error
Correct wiring,
connections
Wired
incorrectly
Check power
cord/plug &
socket
OK
Replace
Fuse
Is there any
Error codes ?
Error code in
IR Mode ?
Utilize error
code and go
ahead
according to list
Yes
No
Yes
Cooker does
not operate
Replace
Power Board
Cooker operates
Unit works.
Continuous test for
about 10 minutes is
necessary
Yes
Contact
Electrician
Defective
OK
Check if fuse is
installed correctly
and power supply