TM 9-4520-272-14&P
0016 00
Table 1. Troubleshooting Procedure for Large Capacity Field Heater (LCFH).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
correctly.
29. Heater starts, shuts down,
Step 1. This error code indicates that
Step 1. Repair a broken or damaged
and displays error code: H112
there is an short circuit on the alternator
alternator excitation wire. Ensure
excitation line. Turn power switch to
that it is not shorted to ground.
OFF. Check the alternator excitation
wire (see WP 0039 00 for location) and
Step 2. Replace a defective
ensure that the insulation has not been
alternator IAW WP 0039 00.
damaged and that the wire has not
been shorted to ground.
30. Heater starts, shuts down,
Step 1. This error code indicates that
displays error code: H123 but
the alternator tachometer signal is
engine continues to run
present after shutdown. Turn power
switch to OFF. Check the engine
WARNING
throttle shutdown cable and ensure that
it is not sticking.
Hearing protection should be worn
when performing any
troubleshooting or maintenance
function requiring that the heater
be operating with any of the
access panels open. Failure to
wear ear protection could result in
hearing loss or damage.
Carefully place hand inside heater
and touch engine throttle only. Do
not place hands or inside heater
while heater is operating. Placing
hands inside heater when it is
operating may cause serious injury
or death.
Step 1. Don hearing protection and
open engine bay access door. Move
bottom of engine throttle where
cable is connected and move to the
left (see WP 0026 00 for location).
Hold throttle lever in this position
until engine comes to a fuel stop.
Step 2. Lubricate the engine throttle
shutdown cable IAW WP 0026 00
and ensure that it is not sticking.
Step 3. Replace a defective engine
throttle shutdown cable IAW WP
Step 4. Ensure that engine throttle
shutdown solenoid wire is
connected. See WP 0026 00 for
location.
Step 5. Replace a defective engine
throttle shutdown solenoid IAW WP
0016 00-10
