Middleby Marshall X55G Series, Owner'S Operating & Installation Manual

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SECTION 5
TROUBLESHOOTING
39
SECTION 5
TROUBLESHOOTING
I. TROUBESHOOTING GUIDE
SYMPTOM POSSIBLE CAUSES SOLUTIONS
Nothing displayed on controller 1. Main Switch is OFF.
2. High Limit has tripped.
3. Power not connected.
4. Main breaker not on.
5. Control circuit breaker tripped.
1. Turn on main power switch.
2. Turn power OFF to reset.
3. Check plug at wall.
4. Check main breaker.
5. Check control breaker.
Control display is dim and the
WOW OVEN image can be
seen
Control is in OFF/STANDBY mode. No problem – the control backlight
turns off when the oven is not turned
on for use – Press I/O button.
Oven not baking properly 1. Settings have been changed.
2. Debris in oven or blowers.
3. Improper finger arrangement.
4. Kitchen airflow conditions affecting
the bake.
1. Confirm correct values (time &
temperature).
2. Empty drip pans/clean oven.
3. Check for proper finger settings.
4. Eliminate air cross-currents.
Conveyor noticeably running at
the wrong speed
1. Time settings have been changed.
2. Drive sprocket(s) loose.
1. Confirm correct values and correct
control settings.
2. Tighten drive shaft set screws.
Conveyor not moving 1. Something has jammed the
conveyor.
2. Circuit breaker (behind control
panel) has tripped.
3. Chain, sprocket, or set screw has
come loose.
1. Turn power off. Locate and remove
jammed item.
2. Check conveyor for jamming and
Reset the circuit breaker on right
side control door.
3. With power OFF, remove chain
cover, tighten set screws, replace
chain onto sprockets, and replace
chain cover.
“BAKING” indication goes on
and off in upper left corner of
the control display
Oven is cycling normally. BAKING
indication comes on upon triggering
the photo eye.
No problem – the timed baking cycle
automatically starts when product
breaks the photo eye beam and stops
after product leaves the baking
chamber.
Oven does not enter BAKING
mode when product is placed
on the belt
Photo eye not sensing / working. Enter BLOWER CONFIGURATION
menu (manager access) and turn
Energy Mode to OFF.
Oven will now run in BAKING mode
all the time.
Call service to schedule repair.
Baked product comes out
underdone
1. Settings have been changed.
2. Photo eye not working. Check to
see if BAKING appears on display
when photo eye beam is
interrupted.
Enter BLOWER CONFIGURATION
menu (manager access) and then:
1. Check blower settings.
2. Turn Energy Mode to OFF, Oven
will remain in BAKING mode.