Table 4-2. Unit Troubleshooting Procedure
TEST OR INSPECTION
Check to see if solenoid valve activates.
Notify direct support maintenance if it does not activate.
Inspect fuel hoses for restrictions.
Disconnect and remove restriction from fuel hose, or replace hose as necessary.
BURNER FAILS TO IGNITE OR IGNITION IS DELAYED
Determine if sufficient fuel is in the fuel container.
Fill fuel container as necessary.
Determine if fuel is contaminated with water.
Drain fuel supply into another container and refill fuel container with uncontaminated
Inspect spark plugs for carbon deposits.
Clean spark plugs as necessary.
Inspect spark plugs for proper adjustment.
Adjust spark plugs as required.
Inspect ignition transformer for damage.
Replace ignition transformer if necessary.
Determine if cable assembly connection from transformer to burner is disconnected.
Reconnect if disconnected.
Inspect spark plug porcelain for breaks or cracks.
Replace spark plug if necessary.