Repair manual
MT2136
5-7
Symptom #4 - Burner operates sporadically
Air pressure switch may be open.
Thermal switch tripped.
Faulty RTD probe.
Excessive food/debris accumulation blocking
the airflow.
Check convection blower (or 4 convection fans)
for proper operation.
Determine the ambient temperature in the conĆ
trol compartment. If above 140F (60C) check
the cooling fan operation.
Use the chart in the Technical Appendix (page
6-4) to determine if probe is bad. Replace if necĆ
essary.
The inside of the oven should be cleaned to reĆ
move any materials that could have dropped off
the conveyor belt and possibly blocked some of
the air flow holes. This would include the removal
of the conveyor belt, conveyor belt supports, and
the nozzles. The oven interior and all parts reĆ
moved should then be cleaned with an appropriĆ
ate oven cleaner safe for aluminum.