FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START SAFETY TIME EXCEEDED. (Cont) -726250907

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

Refer to arctic heater (Model B) troubleshooting (TM 9-2320-364-20) for fault code retrieval device

(FCRD) operation.

If arctic heater does not operate, arctic heater may be in lockout mode due to too many start

attempts (code 050). Arctic heater lockout mode (code 050) is activated if arctic heater fails to start

after 20 successive start attempts (10 successive start cycles).

An audible whine will be heard after the system check is completed, indicating the blower motor has

switched on and the system is operating. Audible clicking may also be heard from the fuel metering

pump if the arctic heater fuel system isn't primed.

Perform Steps (2) through (4) only if fault code retrieval device (FCRD) is available.

Perform Steps (5) and (6) only if fault code retrieval device (FCRD) is not available.

VISUAL INSPECTION

(1) Ensure vehicle is returned to normal

operating condition.

(2) Install fault code retrieval device

(FCRD) on arctic heater unit

harness diagnostic connector.

(3) Press the D button on fault code

retrieval device (FCRD) to turn arctic

heater ON.

(4) Clear fault code 050.

(5) Press the D button on fault code

retrieval device (FCRD) twice to turn

arctic heater OFF and ON.

(6) Replace arctic heater control unit

(Para 18-2.2) if fault code retrieval

device is not available.

(7) Turn arctic heater ON

(TM 9-2320-364-10).

(8) Observe arctic heater for proper

operation.

(a) If arctic heater operates, perform

Steps (9) and (10) below and go to

Step 4 of this Fault.

(b) If arctic heater does not operate,

fault not corrected. Perform Steps

(9), (10) and (11) below and notify

supervisor.

(9) Turn arctic heater switch OFF

(TM 9-2320-364-10) or press the D

button on fault code retrieval device

(FCRD), if installed.

(10)If installed, remove fault code retrieval

device (FCRD).

(11) Install cover on arctic heater

(TM 9-2320-364-20).

2-8232-57