TM 9-4940-568-20
2-95
Table 2-15. Heater System Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Heater is equipped with built in diagnostics. While pressing the start switch for two to
five seconds the green LED light will light accordingly.
1. HEATER WILL NOT START.
Blower fan not turning.
Check 24 VDC circuit breaker (Para 3-3).
Heater only blows cool air.
Check that heater is getting fuel.
