Troubleshooting; Blower Motor, Air Switch - Thermador CM301B Service Manual

Lit. No. 94-30-006B
• DISCONNECT THE POWER TO THE APPLIANCE BEFORE SERVICING.
• FOR THOSE CHECKS REQUIRING THE USE OF ELECTRICAL POWER, EXERCISE EXTREME
CARE.
• DO NOT PERFORM HIGH-VOLTAGE TESTS.
THE BLOWER MOTOR
Refer to Page 97 to access the blower motor.
1. With no power applied, disconnect the mo-
tor wire connectors from their terminals.
2. Set the ohmmeter to the R x 1 scale.
3. Touch the ohmmeter leads to the motor ter-
minals. The meter should indicate 13 Ω.
4. If the reading is not correct, remove and
replace the blower motor.
BLOWER ASSEMBLY
Motor Terminals

TROUBLESHOOTING

TESTING THE COMPONENTS
WARNING
TO AVOID ELECTRICAL SHOCK
THE AIR SWITCH
Refer to Page 95 to access the air switch.
1. With no power applied, remove the wire
connectors from the terminals.
2. Set the ohmmeter to the R x 1 scale.
3. Connect one of the ohmmeter leads to the
common (C) terminal of the switch (the termi-
nal callouts are stamped on the switch).
4. Touch the free ohmmeter lead to the N.O.
(normally-open) switch terminal. The meter
should show no continuity with the switch in
its normal position, and continuity when it is
activated.
5. If the readings are not correct, remove and
replace the switch.
Page 103
CM Oven Service Manual