TROUBLESHOOTING
Ve ct or F ® Se ries ▪ S ervice Man ual ▪ MN -4 6 895 ▪ R ev 1 ▪ 7/ 20
77
The Screen will not Turn On
Before you start ▪ Move the main disconnect switch to the OFF position, then move the main
disconnect switch to the ON position. If the striped screen displays, but the oven
will not turn on when the ON/OFF button is pressed, follow the troubleshooting
procedure below.
WARNING: Electric shock and arc flash hazard.
Use caution when measuring line voltage.
Wear Personal Protective Equipment (PPE).
NOTICE
Do not operate the oven in a cooking mode for an extended
period of time with the service panels removed. Damage to the
electronics may occur without adequate cooling airflow.
An auxiliary fan must be used if the oven will be operated in a
cooking mode for an extended period of time with the service
panels removed.
Did the green LED
illuminate when the ON/
OFF button was pressed?
No
a. Measure the DC
voltage at the power
supply.
b. Was 12 VDC
measured?
No
Replace the power supply.
Yes
Yes
Inspect the ON/OFF
wire harness. Repair or
replace as required. If
the harness has no
damage, replace the
ON/OFF board.
With the green LED
illuminated, measure the
AC voltage across pin 3 of
the P1 connector on the
ON/OFF board and DC
ground. Does the voltage
measure 3–5 VAC?
No
Replace the ON/OFF
board.
Yes
Replace the user interface
board (IB).
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