Welbilt C4 12.20, Operating Manual, Page: 109 / 115

6.2.3 Problems During Operation
Problems with the food being cooked
Problem Possible cause Required response
Irregular browning The suction panel is not closed properly 'Release the suction panel and lock it back
in place' on page 86
The oven cavity is not pre-heated Pre-heat the oven cavity
The oven temperature is too high Select a lower cooking temperature and
cook the food longer
The heating system is malfunctioning
partially or entirely
Contact Customer Service
Problems with the unit
Problem Possible cause Required response
The unit does not respond to in-
put for 10 – 20 seconds
Program crash Press and hold the ON/OFF button for five
seconds or disconnect the unit from the out-
let for five seconds
The unit cannot be turned on or
off anymore
The ON/OFF button is locked for three
seconds
Try again after three seconds.
Water is coming out from under
the unit when the unit door is
closed
Regardless of the cause CAUTION! Contamination hazard
Destroy all food that has been in contact with
the water.
The drain pipe or wastewater system is
clogged or constricted
■
Check the drain pipe and the on-site
wastewater system and clean if necessary
■
Use a funnel waste trap if necessary
Non-detachable drain connection in units
with fully automatic or semi-automatic
oven cleaning
The air vent is clogged or covered
Remove the object clogging or covering it
The unit drain is clogged Clean the unit drain
In EB/GB models:
Water is sprayed into the oven
cavity during operation
In EB/GB models:
The automatic boiler rinsing system has
not been run on a daily basis
In EB/GB models:
Empty and rinse out the boiler
There is water inside the oven
cavity
The oven drain is clogged Flush the oven drain
Steam comes out from the dry
air intake on top of the unit.
Malfunctioning valve in dry air intake WARNING! Risk of scalding posed by hot
steam
Contact Customer Service
A lot of steam is coming out from
the sides of the closed unit door
during operation.
Faulty door gasket
■
Check the hygienic removable gasket for
damage and replace it if necessary
■
Contact Customer Service if there is no
apparent cause for the problem
6 How to Perform Maintenance on the Combi Oven
Operating Manual 109