TM 10-4520-262-12&P 0009 00
Table 1. Operator Troubleshooting Procedures
TEST OR INSPECTION
Step 5. Are combustion air inlet cover
vents and exhaust pipe clear of
Clear combustion air inlet and exhaust
If heater starts, shuts down after
approximately 30 seconds, and
generates a fault code 3, remove the
flame sensor IAW WP 0012 00 and
ensure that it is not iced over or
covered with soot that would obscure
the sensor. Re-install the flame
sensor and attempt a restart.
If the heater still fails to operate,
replace flame sensor as detailed in
WP 0012 00.
If the heater fails to operate after
replacing the flame sensor, notify unit
8. Fault Code 4
Step 1. Does burner require
This fault code is generated when the
burner requires maintenance. It is
caused by cinter material getting
clogged with fuel byproducts as a
result of use. Notify unit maintenance
and schedule a burner assembly
Step 2. Is fuel can full of proper fuel
type for temperature conditions?
Refer to WP 0001 00, Table 3.
Approved Fuels At Various
Temperatures. Verify that fuel being
used is appropriate for the
temperature in which the heater is
Step 3. Is fuel can full?
Fill fuel can.
Step 4. Is there a kink or loop in the
fuel hose restricting the flow of fuel to
Remove any kinks or loops in the fuel
hose and make sure that it lies flat
Ensure that there are no kinks in the
hose on the gravity feed adapter.
Ensure that all fuel quick disconnect
connectors are securely engaged.
Notify unit maintenance.