Middleby Marshall PS640E Oven User Manual


 
III. QUICK REFERENCE: TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION
No electrical power Check that the circuit breaker/fused disconnect is on.
Make sure the emergenct stop button is on.
Oven will not
turn On.
Faulty contactor
Faulty heater element
Replace contactor.
Replace element.
Oven will not
heat.
Air fingers may be as-
sembled incorrectly after
cleaning.
Turn oven off, and allow to cool. Reassemble fingers
correctly.
Oven is operating, but
little or no air is coming
from the fingers.
Conveyor may be jammed. Turn oven off, and allow to cool. Check conveyor for
blockage.
Conveyor will not move.
SYMPTOM PROBLEM SOLUTION
The internal battery needs
to be replaced to retain en-
ergy mode timings.
A qualified service technician should accomplish this.
Battery Symbol in the
lower right hand corner
Clean rear grills. Failure to do this will eventually shut down the oven due to
excessive temperature.
High Control Compartment
Temperature
IV. SCREEN ALERTS
Control Over Temp Rear Grills are clogged. Clean grills.
Front belt jammed Front belt has stopped. Remove obstruction, and restart oven.
If no obstruction, call service.
Rear Belt jammed Rear belt has stopped. Remove obstruction, and restart oven.
If no obstruction, call service.
High Temp Error Thermocouple or Call service.
PLC malfunction.
Belt off-Oven not Normal operation until
in temperature Oven reaches operating
temperature.
Energy Saving Mode 1 Normal operation.
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