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4-2-10 TCO Open
TCO Open
Replace TCO
- Colling motor, Conveclion Motor
check
YES
- PCB SMPS Input Voltage check
(input check point: 5V, 230V)
YES
- PCB SMPS output Voltage
check
(output check point: 5V, 12C)
YES
- PCB Relay contact short check
NO
Check wire short and operation
of a sensor
BF641FST_XFA_05291A.indb 28
Note : When oven is operating , if main power off,
power oven off, in temporary temperature rise,
TCO is possible will can open.
- Motor Terminal Voltage check
NO
NO
YES
NO
NO
YES
- 28 -
• Motor Connect wire Remove
- Motor Resistor check
(Cooling motor: 238Ω
Convection Motor: 218Ω)
YES
Repair Faulty wiring
Replace PCB
Replace PCB
Replace Motor
NO
2011-10-31
1:33:36
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