Lochinvar Condensing Boiler FBN5001

Record the flame signal at high fire for each combustion system

Is the flame signal at least 10 microamps?

Troubleshooting Low Flame Signal

Clean the flame sense electrodes

Is the ground wiring in good condition?

Is the ground continuity satisfactory?

Replace the flame sense electrode if necessary

Low Water Cutoff Test and Reset

Reset button (low water cutoff)

Piping Inspection and Leak Check

Inspect all water and gas piping and verify to be leak free

Are there any signs of leaking lines?

Describe any problems found with leaking lines

Correct any problems found with leaking lines

Gas Line and Relief Valve Check

Flue Vent System and Air Piping Inspection

Visually inspect the entire flue gas venting system and air piping for blockage, deterioration, or leakage

Repair any joints that show signs of leakage

Verify that air inlet pipe is connected and properly sealed

Verify that boiler vent discharge and air intake are clean and free of obstructions

Air and Vent Termination Screens

Check air and vent termination screens

Verify that boiler area is free of any combustible materials, gasoline, and other flammable vapors and liquids

Verify that air intake area is free of any contaminants

If contaminants are present, have they been removed?

If contaminants cannot be removed, have the air and vent lines been reinstalled per the manual?

Check pressure/temperature gauge

Enter the current pressure reading from the gauge

Enter the current temperature reading from the gauge

Is the pressure within the normal operating range?

Remove the ignition electrode from the burner plate

Remove both flame sense electrodes from the burner plate

Remove deposits from the ignition electrode using sandpaper

Remove deposits from the flame sense electrodes using sandpaper

Were the electrodes cleaned satisfactorily?

Replace electrodes with new ones if cleaning was unsatisfactory