TM 9-4520-260-13
Table 5-1. Troubleshooting - Continued
HEATER FAILS TO START -
BLOWER RUNS FOR A SHORT
TIME THEN STOPS
NO POWER AVAILABLE TO THE GLOW PLUG
JUMPER TERMINALS 1 TO 4 ON ECU1. IF GLOW PLUG HEATS, REPLACE ECU1. IF STILL NO POWER
TO GLOW PLUG, CHECK ELECTRICAL CIRCUIT BETWEEN J1 AND TERMINAL 1 OF ECU1.
NO POWER TO THE IGNITION PACK
JUMPER TERMINALS 1 TO 10 ON ECU1. IF KNOWN GOOD IGNITION PACK AND IGNITER SPARK,
REPLACE ECU1. IF NO SPARK, CHECK ELECTRICAL CIRCUIT BETWEEN J1 AND TERMINAL 1 OF ECU1.
IGNITION PACK IS OPERABLE AND IGNITER SPARKS, BUT HEATER
FAILS TO START. BLOWER RUNS FOR A SHORT TIME THEN STOPS.
REMOVE CARBURETOR (PARA 5-3) AND BURNER ASSEMBLY (PARA 5-5). PERFORM ALL CLEANING
AND INSPECTION PROCEDURES. INSPECT HEAT EXCHANGER (PARA 5-7) WHILE BURNER ASSEMBLY
IS REMOVED.
5-3
