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 TM 55-1905-220-14-8
4-5. GENERAL (Continued).
Table 4-22. Washer/Dryer Troubleshooting (Continued.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18. No heat - drum rotates.
Step 1 . Inoperative heating element.
Check OHMS resistance and replace if necessary.
Step 2. Inoperative timer.
Check continuity through timer and replace if
necessary.
Step 3 . Fabric selector.
Check fabric selector. If set on NO HEAT, advise user.
Step 4. Heat control thermostat.
Check continuity through thermostat per wiring
diagram in paragraph 4-42 and operating temperature
limits. If improper, replace. An open thermal
fuse usually indicates permanently closed contacts
in the control thermostat.
Step 5. Motor speed switch.
The motor speed switch must be closed to provide
a complete circuit for the heat source. Use a
240 volt test light or voltmeter to test for a
closed switch circuit with the motor in operation.
R to R motor terminals with the harness leads in
position should measure O volts or a NO LIGHT
condition. A 200 + volt indication or bright
light indicates an open speed switch contact and
the motor switch should be replaced.
Step 6. Safety limiter thermostat.
Check the safety limiter thermostat to be a closed circuit and operate within temperature limits.
If improper, replace.
4-76
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