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Page Title: FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START SAFETY TIME EXCEEDED. (Cont)
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TM 9-2320-364-34-1
8. FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START
SAFETY TIME EXCEEDED (CONT).
4.
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
NO
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
82

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