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B. ALERTS, ERRORS & REMEDIES
SYMPTOM PROBABLE CAUSE REMEDY
PROBE 1 OPEN on display and
audible alarm sounds.
Temperature Probe number 1
(upper left) is open.
Press enter key to silence
alarm and resume operation.
Control will compensate for lost
probe. Call service to repair.
FRONT BELT STALLED
FRONT BELT STALLED
shown on display and audible
alarm sounds.
Belt was overloaded and control
shut down the belt.
Press to silence alarm.
Check belt for cause of jamming
and follow screen instructions to
resume belt operation.
FRONT BELT COMM LOST or
BACK BELT COMM LOST shown
on display and audible alarm
sounds.
Circuit breaker to conveyor motor
drive board is tripped. Oven will
continue operation with single belt
in operation.
Press to silence alarm.
Clear any obstructions to belt
travel and reset 1A breaker. If
unsuccessful, call for service.
UPR SW NOT CLOSED or
LWR SW NOT CLOSED shown
on display and audible alarm
sounds
Switch proving that the blowers are
operating is not closed. Error
caused either by switch itself or by
one or more blowers not operating.
Press enter key to silence
alarm. Unplug oven and plug in
again. Restart oven. If
unsuccessful, call service for
immediate repair.
HEATING ERROR shown on
display and audible alarm sounds.
The oven has failed to preheat in
the expected time period (30
minutes). Either a burner issue is
occurring, or the oven was
interrupted while heating up.
Press enter key to silence
alarm. Turn oven off and back on
again. If unsuccessful and error
reoccurs, call for service.
PROBES OPEN shown on display
and audible alarm sounds
All thermocouple probes have failed
and are open.
Press enter key to silence
alarm. Call service for immediate
repair.
I/O COMM LOST
Communication between the
display (user interface) and the I/O
board has occurred.
Press enter key to silence
alarm. Call service for immediate
repair.
“IGNITION LOCKOUT” on display
Oven burner failed to light / stay lit
1. Gas not turned on to oven
2. Burner has stopped running
Press enter key to silence
alarm.
Turn the oven off and back on
again to clear the notification and
relight.
NOTE: If the remedial measures above do not successfully resolve the issue, or the issue is
not listed above, contact the Middleby Customer Care Center at 847-429-7852.
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