FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START SAFETY TIME EXCEEDED. (Cont) -726250902

TM 9-2320-364-34-1

8. FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START

SAFETY TIME EXCEEDED (CONT).

KNOWN INFO

TEST OPTIONS

WARNING

Fuel level OK (checked at

Read WARNING

Visual inspection.

on Page 2-766.53

operational level).

Arctic heater intake port checks

REASON FOR QUESTION

OK at unit level.

If measured fuel is between 0.62

Arctic heater exhaust port and

Does fuel metering pump de-

and 0.65 (18.64 and 19.36 ml),

exhaust tube checks OK at unit

liver 0.62 to 0.65 ounces

arctic heater fuel metering pump

level.

is OK.

(18.64 to 19.36 ml) fuel to arc-

Arctic heater fuel lines check OK

tic heater during a start

at unit level.

cycle?

Arctic heater fault code 050 not

active.

POSSIBLE PROBLEMS

If arctic heater does not oper-

Arctic heater fuel metering pump

ate, go to Step 2 of this Fault.

faulty.

Arctic heater fuel system not

If no or low fuel is delivered

primed.

and audible clicking is heard

Arctic heater flame sensor faulty.

from fuel metering pump, go to

Arctic heater glow pin faulty.

Step 4 of this Fault.

If fuel metering pump delivers

less than 0.62 ounces (18.64

ml) of fuel, replace fuel meter-

ing pump (TM 9-2320-364-20).

Verify repair, go to Step 7 of

this Fault.

YES

Go to Step 6 of

this Fault.

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