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SOLVING OPERATIONAL PROBLEMS
Before calling for service, check the following to avoid unnecessary service charges.
OVEN PROBLEM
EN
F03 or F04 Error appears
in the display window.
F15 or F16 Error appears
in the display window.
Other F__ Error appears in
the display window.
OVEN PROBLEM
The oven display stays
OFF
Cooling fan continues to
run after oven is turned
off
Oven door is locked and
will not release, even after
cooling
Oven is not heating
Oven is not cooking
evenly
Oven temperature is too
hot or too cold
Oven light is not working
properly
Oven light stays on
Cannot remove lens cover
on light
Oven will not Self-Clean
properly
Clock and timer are not
working properly
Excessive moisture
42
©2021 Hestan Commercial Corporation
PROBLEM SOLVING STEPS
A problem with latch mechanism occurred. Remove power and
turn it back on again after a few seconds.* The oven should run a
latch auto–test. If condition persists, note the code number and
call for service.
Error code occurs if cooking mode knob position was left
between OFF and SELF-CLEAN or between DEFAULT / PRESET
and SELF-CLEAN on the temperature selector knob for 30
seconds or more. F15 is related to the upper oven and F16 is
related to lower oven (depending on model).
Rotate all the oven knobs in OFF position then remove power
(either unplug or turn off breaker) and turn it back on again after
a few seconds. If condition persists with knobs in OFF position,
note the code number and call for service.
Remove power and turn it back on again after a few seconds.* If
condition persists, note the code number and call for service.
PROBLEM SOLVING STEPS
Remove power and turn it back on again after a few seconds.* If
condition persists, call for service.
This is normal. The fan turns off automatically when the
electronic components have cooled sufficiently.
Remove power and turn it back on again after a few seconds.*
The oven should reset itself and will be operable.
Check the circuit breaker or fuse box to your house. Make sure
there is proper electrical power to the oven. Make sure the oven
temperature has been selected.
Refer to cook charts for recommended rack position. Always
reduce recipe temperature by 25° F [15° C] when baking with
Convention Bake mode.
The oven thermostat needs adjustment.
Contact Hestan Customer Service.
Replace or reinsert the light bulb if loose or defective. See
"REPLACING AN OVEN LIGHT" on page 40. Touching the
bulb with fingers may cause the bulb to burn out.
Check for obstruction in oven door. Check to see if hinge is bent
or door switch broken.
There may be a soil build-up around the lens cover. Wipe lens
cover area with a clean dry towel prior to attempting to remove
the lens cover.
Allow the oven to cool before running Self-Clean. Always wipe
out loose soils or heavy spillover before running Self-Clean. If
oven is badly soiled, set oven for a four-hour Self-Clean.
See "SELF-CLEANING THE OVEN" on page 35.
Make sure there is proper electrical power to the oven. See the
"SETTING THE CLOCK AND TIMER" on page 17.
When using Bake mode, preheat the oven first. Convection Bake
and Convection Roast will eliminate any moisture in oven (this is
one of the advantages of convection).
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