FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START SAFETY TIME EXCEEDED. (Cont) -726250904

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 2-766.55

operational level).

Arctic heater intake port checks

REASON FOR QUESTION

OK at unit level.

If arctic heater fuel metering

Arctic heater exhaust port and

pump cannot be primed, arctic

exhaust tube checks OK at unit

heater fuel metering pump may

level.

Can arctic heater fuel meter-

be faulty.

Arctic heater fuel lines check OK

ing pump be primed?

at unit level.

Arctic heater fault code 050 not

active.

Arctic heater fuel metering pump

OK.

Arctic heater flame sensor OK.

If arctic heater does not oper-

Arctic heater glow pin OK.

ate when arctic heater switch is

turned ON (lockout mode acti-

POSSIBLE PROBLEMS

vated), go to Step 5 of this

Fault.

Arctic heater fuel system not

If arctic heater fuel metering

primed.

pump fails to prime itself within

ten start attempts (five start

cycles) replace arctic heater

fuel metering pump (TM

9-2320-364-20). Verify repair,

go to Step 7 of this Fault.

YES

Verify repair, go to

Step 7 of this

Fault.

2-540