Picture
1
TEST 2
TEST 1
Do you have
electrical
continuity?
End
T
wer supply.
Disconnect P22 socket
of the contactor and test
the ele
ctrical continuity
between pin 4 and 5
that are those in
corrispondence of the of
the TSA and TSR labels on
the power board
with the multimeter
set to ohm
Measure the electrical
continuity of the cable
from the P22
socket to the safety
thermostat plug.
Meaure the continuity
PIN to PIN.
Reset the thermostat and
analyse the possible causes
such as oven installation,
external heating sources
and chamber probe 1 switched
with chamber probe 2,
contactors blocked,
power board damaged
Replace the safety
thermostat
Replace cable
Wait for the oven to
cooldown to the
room temperature
Do you have
the electrical
continuity?
Do you
have
electrical
continuity
in the wiring?
Has the safety
thermostat triggered?
It triggers at
320°C (608°F)
End
AF02 safety
thermostat alarm
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
Does the alarm
persist?
Restore the cable
harness and test the
oven
Measure the
electrical
continuity of the
safety thermostat as
shown in the picture
Replace the power
board and send
to the UNOX service
department a picture
as shown below
OVEN
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