TM 9-4520-260-13
Table 5-1. Troubleshooting- Continued
HEATER SMOKES OR BACKFIRES
HEATER HAS STRONG SPARK; STILL SMOKES OR BACKFIRES
AND INSPECTION PROCEDURES. INSPECT HEAT EXCHANGER (PARA 5-7) WHILE BURNER ASSEMBLY
IS REMOVED.
HEATER CYCLES ON-OFF EXCESSIVELY
AIR FLOW IS NOT BLOCKED
INSPECT BLOWER/MOTOR/VENT ASSEMBLY (PARA 5-6). REPLACE ANY DEFECTIVE PARTS.
5-4