TM 9-4520-272-14&P
0015 00
No power when power switch is turned on ................................................................................................... 9
Heater will not start after 3 attempts ........................................................................................................... 10
Heater starts but sputters or runs erratically ............................................................................................... 11
Heater runs then shuts down unexpectedly with no error code displayed on control panel....................... 12
Fuel leak is observed in the heater ............................................................................................................. 56
Heater starts, continues to run but displays one of the following fault codes shown in Table 3:
Table 3. LCFH Unit Level Soft Fault Codes.
Fault
Troubleshooting
Description
Code
Step
Soft Faults
15
S221
Burner failed to start...........................................................................................
16
S231
Flame detected in post-purge ............................................................................
17
S241
Flame not detected at flame sensor ..................................................................
14
S411
Heat exchanger airflow not detected .................................................................
13
S412
Heat exchanger over temperature .....................................................................
Heater may or may not start, shuts down and displays following fault codes shown in Table 4:
Table 4. LCFH Unit Level Hard Fault Codes.
Fault
Troubleshooting
Code Description
Step
Hard Faults
28
H111
Alternator excitation open circuit .................................................................................
29
H112
Alternator excitation short circuit .................................................................................
23
H121
Alternator Tachometer loss of signal during engine run..............................................
24
H122
Alternator Tachometer not detected during Engine Crank..........................................
30
H123
Alternator tachometer signal present after engine shutdown......................................
31
H124
Alternator tachometer signal present before engine start ...........................................
18
H130
Battery Voltage Low/High (checked during engine operation 19.5V to 32V) ..............
19
H131
Battery low voltage (checked during engine start 15V minimum) ...............................
20
H211
Burner Combustion Fan Low Current (2.5 amps) .......................................................
Burner combustion fan over current condition detected
32
H212
(checked after engine start )
22
H232
Burner Flame detected during burner pre-purge.........................................................
51
H251
Spark ignition transformer relay open circuit T1..........................................................
52
H252
Spark ignition transformer relay short circuit T1..........................................................
54
H311
Carbon monoxide detected at operator control panel .................................................
55
H312
Carbon monoxide detected in inlet air .........................................................................
33
H321
Carbon monoxide (CO) inlet air sensor open circuit ( driver side ) .............................
END OF WORK PACKAGE
0015 00-2
