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TM 9-2320-364-20-2
2-1598
49. HEATER DOES NOT OPERATE OR WILL NOT CHANGE SPEEDS (CONT).
Cooling fan operation normal
indicating 24 vdc supplied to
EPAC from CB15.
Fan and heater operates at one
speed.
FAN control switch OK.
Wire harness OK.
Heater resistor OK.
Wire 1082 OK.
Rectifier M81 OK.
Wire 1082 OK.
Wire harness OK.
Heater motor wire 1435 OK.
Heater motor OK.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Verify repair.
YES
NO
Fault not corrected.
Notify DS
Maintenance.
10.
Does heater operate
correctly?
Fault corrected.
If heater operates correctly, fault
has been corrected.
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