OVERHEATING G
YES
NO
NO
NO
NO
YES
YES
NO
YES
YES
Test 1
Test 2
Does
the back
cooling fan
run?
Is it
from the
inside to the
outside of the
unit?
Is the
oven close
to an external
heating
source?
Test
the back
cooling fan by
measuring the
power supply on the
connection of the cooling
fan, with the multimeter set
to VAC. Does the back
cooling fan receive
the 230 V AC
power supply?
WF06/U01
overheating power
board warning
Replace the
back cooling fan
Replace the
power board
Check the
direction of the
air flux
Reverse the position
of the back cooling
fan inside its case
Move the oven far
away the external
heating source
Test the oven and investi-
gate the possible causes of
overheating such as oven
installation, external
heating sources etc.
Is the
temperature
over 70 °C (158 °F)?
Replace the
power board
Measure the temperature in
the back side of the oven near
the power board (with the
back panel closed) with
an external certified probe
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