Heating of
shortening too
slow.
Shortening
overheating.
Supply line too small - low
gas volume.
Improper ventilation
system.
Burner out of adjustment.
Programming wrong.
Faulty PC Board.
Faulty probe.
Increase supply line size.
Refer to installation
instructions.
Refer to installation
instructions.
Observe burners.
Check gas pressure.
Adjust air flow so burners
are an orangy-red.
Check temperature setting
in the program mode.
Remove and replace control
panel.
Remove and replace probe.