TM 9-4520-257-12&P                                                      0008 00 0008 00-2 Table 1.  H-45 Type I (Solid Fuel) Heater Troubleshooting (Operator) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. Draw grate will not move Check for clinkers (burnt wood or coal) lodged in grate openings. Remove clinkers. Check to see if base heater door is closed. Open base heater door. 2. Heater does not heat properly Check to see if flue damper is blocked or closed. Open flue damper. Remove stack, and clean flue damper. Check to see if too much fuel was added at one time. Reduce the quantity of fuel but add fuel more often. Check for accumulation of soot in stack pipes. Remove and clean stack pipes. 3. Excessive dark smoke Check for accumulation of ashes. Shake down fire and clean out ashpit. Table 2.  H-45 Type II (Liquid Fuel) Heater Troubleshooting (Operator) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Check to see if fuel can is empty. Check fuel supply and replenish if necessary.  (Refer to   WP 0005 00, “Refueling the   H-45 Type II (Liquid Fuel) Heater.”) Check to see if fuel OFF/ON control on fuel flow control is turned to OFF position. Set fuel OFF/ON control to ON position. Check fuel line from fuel can to fuel flow control for air bubbles. Open primer valve and shake hose assembly to purge air bubbles until a strong flow is achieved. 1. Burner does not fire. Check to see if fuel selector control is improperly set. Turn fuel selector control to fuel being used. (Refer to   WP 0005 00, “Starting the H-45 Type II (Liquid Fuel) Heater.”)