[Solved] Ariston Egis Plus 24FF Boiler: Error 501, SP1, SP3 - Intermittent Ignition & Flame Sensor Issues

Hello,
the problem concerns the boiler from the topic. The boiler does not fire every time. The problem worsens after a night or when it has not been used for a long time. Crashes alternately sp1 and sp3.. sporadically 501.
Drinking water and heating filter cleaned. Ignition electrode and flame sensor cleaned together with the burner chamber.
From what I noticed after starting the boiler, the magneto ignites only one row of the burner. The flame sensor is on the row next to it and for this reason the boiler turns off after a while and crumbles with errors.
What could be the reason for this behavior? After the second attempt to start the boiler, in 99% of cases it fires up and works properly until a long break.

Hello,

@ quiet, did you solve the problem with the Aristion stove, I noticed a similar problem yesterday on my stove and I am looking for a solution?

Regards,
aszx

That's how I solved the problem. I bought a U-tube and used it as a meter to regulate the furnace. After adjustment, the furnace works almost without problems for almost 2 years. I had very run-down values ... especially the "slow ignition" parameter. He concludes that during the firing attempt, the gas stream is too strong and blows out the flame before it ignites.

quiet wrote:

He concludes that during the firing attempt, the gas stream is too strong and blows out the flame before it ignites.

Or rather too small!

Not too small. During start-up, gas is dosed gently (so-called slow ignition), when a flame is detected, the furnace increases gas pressure and works in normal mode.
For me it looked like this: the stove fires at low pressure ... 1/3 of the burner ignites. During this time, a flame is detected, the gas pressure is increased and the burner goes out immediately (a blow was visible). After adjustment (all the values were overestimated) the burner in the ignition phase ignites all at once and increasing the pressure causes the formation of larger flames rather than their "bursting".

quiet wrote:

For me it looked like this: the stove fires at low pressure ... 1/3 of the burner ignites. During this time, a flame is detected, the gas pressure is increased and the burner goes out immediately (a blow was visible).

1/3 of a burning burner cannot blow out a fire as pressure increases. Rather, it would cause an explosion of excess gas.

quiet wrote:

After adjustment (all the values were overestimated) the burner in the ignition phase ignites all at once and increasing the pressure causes the formation of larger flames rather than their "bursting".

When it is good after regulation, what is the problem?

I don't have any problems anymore ... I think my friend is a little crazy ...
As you can see ... and it is logical..and I'm a fireman ... just like you can put a burning match in oil. Well, but I'm not going to prove anything to you ... I know what I saw ... and I know how I repaired the stove.

Now it makes sense, the topic strangely reappeared # 1 22 Aug 2017 20:44 // # 2 15 Apr 2019 12:13 .... just the topic needs to be closed.

The furnace was unregulated.
I made adjustments using a u-tube. All parameters were greatly overstated, especially the "slow ignition" parameter.