TM-9-2540-207-14-P
HEATER, VEHICULAR COMPARTMENT, MODEL: A20
TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2007
TM-9-2540-207-14-P - Page 167 of 288
TM 9-2540-207-14&P
6-3
C7
Fuel Pressure Sensor Fault
C9
Fuel Pump Fault
E2
Low Fuel Pressure
E5
Inlet Over Pressure
E6
System Voltage
F3
Heat Limit
F6
Ambient Over Temperature
Table 6-1. Warning Faults
Table 6-2. Shut Down Faults
6.3
Troubleshooting - General
!CAUTION!
Do NOT attempt to start heater more than three (3) times.
If the heater does not start, the Control Box Lamp is flashing, and/or a diagnostic fault code is
noticed on the Diagnostic Display, attempt two more starts prior to initiation of heater
maintenance.
-
If the Control Box Lamp begins to flash, the heater is signaling that an abnormal
condition is present and the diagnostic display should be viewed for the possible
fault.
-
If Ignition is not achieved in the allowable 3 ½ minutes, the heater will automatically
shut down, flash the Control Box Lamp, and display the fault.
-
When the heater is switched off by the operator the control box lamp will flash, in this
case no maintenance is required and the heater can be restarted after shutdown is
complete.
!CAUTION!
If black smoke is noticed during any mode of Heater Operation, shut down the heater,
and check for airflow obstructions.
It is possible that frost has built up in the
combustion air intake or that debris has entered into the combustion system .
C1
Ignitor Fault
C2
Ignitor Short
C3
Vent Fan Fault
C4
Burner Fan Fault
C5
Exhaust Sensor Fault
C6
Vent Sensor Fault
C8
Controller Fault
CA
Fuel Injector Fault
E1
Low Voltage
E3
Low Burner Air Flow
E4
Reverse Burner Air Flow
F1
Ignition Overtime
F2
Burner Flame Out
F4
Vent Air Over Heat
F5
Over Current
F6
Ambient Over Temperature
F7
Exhaust Over Temperature
F8
Ignition Flame Out
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