How to check a boiler for flame failure?

1 Check furnace and report to boiler control room 2 Check flame scanners for any possible slag accumulation 3 Check mills and restore them for starting 4 Check oil trip valves for proper function 5 Make sure oil guns are in position for light up of boiler

What causes a flame scanner trip to fail?

Flame scanner trip due to poor and unstable flame These causes lead to flame failure individually or in a few a combination. This will depend upon when the flame quality becomes unacceptable. In many cases it is possible to see fluctuation in furnace pressure

What causes a boiler fan to trip before flame failure?

This will depend upon when the flame quality becomes unacceptable. Tripping of the primary air fan or very low primary air header pressure is more probable to occur just before flame failure It has to be remembered that delay in lighting up the boiler will decay the boiler pressure and temperature.

Why is my Asley 2009 boiler not firing up?

Same symptoms as Asley 2009 boiler will not fire up. Having to operate boiler by lowering control panel PCB on its hinges. All seems OK until panel is reseated. The PCB seems to be at fault, any clues? Had the same problem, the right hand thermistor failed on mine several times so eventually replaced with a clip on type and no further problems.

What does the flame failure light on a boiler mean?

It’s a way of telling the Circuit Board (PCB) in the boiler that the flame is lit as heat from the pilot creates a voltage. If the thermocouple fails, no voltage will be sent to the PCB and it therfore thinks the flame has gone out and will shut off the gas to the pilot light altogether.

Why does my FID light but not the flame?

The FID sometimes light, sometimes not: The column is installed too far into the detector. Cause:As the detector nut is tightened, it forces the column end into the jet. Solution:If the column is installed too far into the inlet, the make-up flow is blocked and the FID will not operate effectively. In this case, the flame will not typically light.

Why is the pilot light on my boiler not working?

Most times I have experience this problem it has been the thermocouple. If you look at the pilot light under normal conditions (I know you can’t at the moment as it’s not working) you will see a probe-like piece of metal in the flame.