FAULT CODE 064 OR 065: FLAME SENSOR OPEN CIRCUIT OR FLAME SENSOR SHORT CIRCUIT. (Cont) -726250929

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

Arctic heater flame sensor resistance is between 900 ohms at -13_F (-25_C) and 1100 ohms at 77_F (25_C).

CONTINUITY TEST

(1) Ensure arctic heater temperature is

between -13_ and 77_F (-25_ and 25_C).

(2) Remove cover from arctic heater

(TM 9-2320-364-20).

(3) Disconnect arctic heater unit harness

connector from arctic heater control unit

(TM 9-2320-364-20).

(4) Remove three screws and arctic heater

control unit (Para 18-2.2).

(5) Connect positive (+) lead to gray wire at

arctic heater internal harness connector,

terminal 15.

(6) Connect negative (-) lead to gray wire at

arctic heater internal harness connector,

terminal 16.

(7) Is resistance measured across arctic

heater flame sensor between 900 and

1100 ohms at room temperature?

(a) If resistance reading is not between

900 and 1100 ohms at room

temperature, replace arctic heater

flame sensor (Para 18-2.2).

(b) If resistance reading is between 900

and 1100 ohms at room temperature,

replace arctic heater control unit

(Para 18-2.2).

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