FAULT CODE 033: BLOWER MOTOR SPEED FAULT. (Cont) -726250885

TM 9-2320-364-34-1

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical circuits, a

direct short may result. Damage to equipment, injury or death to personnel may occur.

NOTE

An audible whine should be heard when power is applied, indicating the arctic heater blower motor is operating.

VISUAL INSPECTION

(1) Remove cover from arctic heater

(TM 9-2320-364-20).

(2) Disconnect arctic heater unit harness

connector from arctic heater control unit

(TM 9-2320-364-20).

(3) Remove three screws and arctic heater

control unit (Para 18-2.2).

(4) Connect 24 vdc power supply positive (+)

lead to orange wire at arctic heater

internal harness connector, terminal 1.

(5) Connect 24 vdc power supply negative (-)

lead to black wire at arctic heater internal

harness connector, terminal 4.

(6) Turn 24 vdc power supply ON and

apply power to circuit.

(7) Observe operation of blower motor.

(8) Turn 24 vdc power supply OFF.

(a) If arctic heater blower motor does

not operate, replace arctic heater

blower (Para 18-2.2).

(b) If arctic heater blower motor

operates, go to Step 2 of this Fault.

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