Unox MINDMaps BAKERTOP, Service Manual

Page: 206 / 216

aM04 - Motor tHerMal ProteCtioN alarM (t > 150 °C/302 °F)
SLOWTOp
YES NO
NO NO Replace the motor
YES
YES
NO YES
NO YES
Replace the
power board
End
AM04 motor thermal
protection alarm
(T > 150 °C/302 °F)
Does the
back cooling
fan run?
Replace the
power board
Turn off the power supply,
disconnect the P9 socket
and test the electrical
continuity
between
the white cable with the
multimeter set to ohm
Do you
have the electrical
continuity?
Unplug the motor from
the circuit and check the
continuity
between
the white cables of the
motor with the
multimeter set to ohm
Do you have
the electrical
continuity on
the P9 socket?
Measure the electrical
continuity of the
cable harness from
the P9 socket to the
motor plug. Measure
the conductivity PIN
to PIN
with the
multimeter set to ohm
Replace the
cable harness
Do you
have electrical
continuity?
Restore the
cable harness
and test the
oven
Does the
alarm persist?
Replace the power
board and send
a
picture as shown in the
example to the UNOX
service department
206