TM 9-4520-272-14&P
0016 00
Table 1. Troubleshooting Procedure for Large Capacity Field Heater (LCFH).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5. Check battery output voltage
Step 5. Replace battery if voltage is
and ensure that it is between 15V and
below 15VDC.
24V.
Step 6. Check output of alternator
Step 6. Test output of alternator. If
during operation and ensure that
no output voltage or low output
voltage on the output wire is between
voltage, replace alternator IAW 0039
19.5V and 35V.
00.
20. Heater starts, shuts down,
Step 1. This error code indicates that
Step 1. Securely mate both halves of
and displays error code: H211
the there is a low current condition at
the combustion fan wire harness
the burner combustion fan. Turn power
connector. Repair or replace
switch to OFF. Check combustion fan
damaged combustion fan wiring
wiring harness and connector and
harness.
ensure that wire is not broken or
damaged. Ensure that both halves of
connector are securely mated.
Step 2. Check combustion fan and
Step 2. Replace a defective
ensure that it is functioning correctly.
combustion fan IAW WP 0049 00.
21. Heater starts, shuts down,
Step 1. This error code indicates that
Step 1. Add engine oil to full mark.
and displays error code: H532
the oil pressure of the diesel engine
Refill fuel tank.
during operation is low. Turn power
switch to OFF. Check oil level of diesel
engine and ensure that level is
adequate. Ensure there is adequate
fuel in the fuel tank.
Step 2. Check diesel engine oil
Step 2. Repair or replace a shorted
pressure switch wire and ensure that it
diesel engine oil pressure switch
is not shorted.
wire.
Step 3. Check diesel engine oil
Step 3. Replace a defective diesel
pressure switch and ensure that it is
engine oil pressure switch.
working properly.
Step 1. Seat flame sensor securely
22. Heater starts, shuts down,
Step 1. This error code indicates that a
and displays error code: H232
flame was detected during burner pre-
in flame sensor tube.
purge. Turn power switch to OFF. Open
burner access door and ensure that
flame sensor is securely installed in
flame sensor tube.
Step 2. Check to ensure that excess
Step 2. View through burner sight
glass and determine if there is still
fuel is not still burner in burner after
fuel burning after heater shutdown.
heater has been shut down.
Allow excess fuel to burn out then
attempt restart.
Step 3. Ensure fuel solenoid valve FS1
Step 3. Replace defective solenoid
opens at heater startup by verifying
valve FS1 IAW WP 0031 00.
pressure indicated on gauge at rear of
burner reads between low fire pressure
of approximately 50 psi and high fire
pressure of 80-90 psi. If FS1 is not
0016 00-7
