LABOVENS.INS.7-18.wpd 17 of 23 07/18
8 TROUBLE SHOOTING
8-1 NO HEAT
8-1.1 Oven Has Run Over-temperature.
For Model LO-201C and LW -201C, check continuity of heat limiter (one time
thermal fuse) and replace it if there is no continuity through the heat limiter.
Heat limiter is located in one of the wires leading to the thermostat. This wire is
covered with a radiant shield that must cover the heat limiter for correct
operation.
For Model LR-271C, reset excess temperature limit interlock (after oven has
cooled) by pressing red reset button located on rear of oven. If excess
temperature limit interlock will not reset, it needs to be replaced.
8-1.2 On/Off Switch
Check for defective switch.
8-1.3 Fuse Burned Out or Circuit Breaker Tripped
Make sure there is power at the oven.
8-1.4 Burned Out Heating Element
Check that there is power to each heating element and that elements are not
open.
8-2 REDUCED OVEN TEMPERATURE
8-2.1 Excessive Exhaust
The amount of heated air removed from the oven may be excessive and result
in a reduced operating temperature. In this case, the oven heat will be running
continuously. This can be corrected by reducing the exhaust until the
maximum operating temperature is achieved.
8-2.2 Door Leakage
Poorly adjusted door or damaged door gaskets (Model LR-271C only) could
result in excessive heat loss around the doorway. Adjust door and/or repair
gasket.
8-2.3 Improper Line Voltage
Voltage at the oven should be measured to determine if an excessive line drop
is causing reduced power input to the heating elements on an electrically
heated oven. This could be caused by too many devices connected to the
same circuit or by undersized wiring between the oven and the power source.
Measure the voltage with the oven heating elements on and all other
equipment on the same circuit operating.
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