OVEN
Measure the
electrical conductivity
of the safety
thermostat as shown
in the picture with the
multimeter set to ohm
Restore the cable
harness and test the
oven
Replace the cable
Test 1
Test 3
Test 2
AF26 detergent
tank alarm
Replace the micro
switch
Fit the tank in its
place and test the
oven
End
Replace the safety
thermostat
End
Is the detergent
tank well fitted
in its place?
Has the safety
thermostat
triggered?
Does the alarm
persist?
Do you have
the electrical
continuity?
Do you have
the electrical
continuity?
Do you have
electrical
Restart the thermostat and
analyse Possible causes
such as oven installation,
external heating sources,
misplaced temperature
probes, contactors blocked,
damaged power board
Te st the
continuity of the
micro switch
Replace the pow
er
b
o
a
rd
a
n
d
s
e
n
d
a
p
i
cture to the UNOX
service department
Wait for the cooling
down of the oven
NO
NO
YES
YES
T
wer
supply and measure
the electrical
continuity of the
micro switch on the
two red cables that
go into the safety
thermostat with the
multimeter set to
ohm
YES
YES
YES
YES
YES
YES
NO
Do you have
electrical
continuity?
NO
NO
YES
NO
NO
Replace the wiring
Do you
have electrical
continuity in the
wiring?
NO
Does the alarm
persist?
NO
Tu
wer
supply. Disconnect the
P22 socket of the
contactor and measure
the electric
continuity between pin
4 and 5 which are in
corresponding to the
TSA and TSR labels on
the power board with
the multimeter
set to ohm
Check the electrical
continuity of the
cable from the P22
socket to the safety
thermostat plug.
Measure the
continuity PIN to
PIN
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