FAULT CODE 053, 054, 055 OR 056: FLAME CUTOUT IN BOOST MODE, FLAME CUTOUT IN HIGH MODE, FLAME CUTOUT IN MEDIUM MODE OR FLAME CUTOUT IN LOW MODE. (Cont) -726250921

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 the fault code retrieval device (FCRD) is not installed, the arctic heater indicator light displays the

diagnostic flash codes for the arctic heater. These flash codes are 8 seconds long and repeat after 8

seconds.

The fault code retrieval device (FCRD) displays the last 5 faults that occur. The latest fault displayed

is either AF or F1. If more than one fault code is displayed, troubleshoot the latest fault code first.

Perform Steps (4) and (5) only if fault code retrieval device (FCRD) is available.

VERIFY REPAIR

(1) If removed, install arctic heater control

unit and three screws (Para 18-2.2).

(2) Connect arctic heater unit harness

connector to arctic heater control unit

(TM 9-2320-364-20).

(3) Ensure vehicle is returned to normal

operating condition.

(4) Install fault code retrieval device

(FCRD) on arctic heater harness

diagnostic connector.

(5) Press the D button on fault code

retrieval device (FCRD) to turn arctic

heater ON.

(6) Turn arctic heater ON

(TM 9-2320-364-10).

(7) Observe arctic heater indicator light

or fault code retrieval device (FCRD)

display, if installed. Note if arctic

heater indicator light flashes code

shown.

(8) Observe arctic heater for proper

operation.

(9) Turn arctic heater switch OFF

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

D button on the 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).

(a) If arctic heater operates normally

and arctic heater indicator light is

illuminated (Fault code 000

displayed on FCRD), fault has

been corrected.

(b) If arctic heater tries to operate and

arctic heater indicator light

flashed flash code shown (Fault

053, 054, 055 or 056 displayed

on FCRD), notify supervisor.

flashed different flash code (Fault

code other than 051 displayed

on FCRD), troubleshoot arctic

heater fault code displayed

(TM 9-2320-364-20).

2-832-71