Boiler being a bellend

[tabbypurr]

Vaillant ecomax 418 refuses to let any of its options be changed - and the system won't run on the default settings. When a value is adjusted you pres s i to back out, but it just doesn't react when a setting is adjusted. The only way out is to either press reset or +i, and either way it ignores the change just made.

Why? How to solve it?

thanks NT

[John Rumm]

You may find some settings will only change in installer mode. There is usually a way you can select a two digit installer code. Try 18

[Brian Gaff]

Do these have a little battery like computers have to keep the settings? Brian

[ARW]

Are you saying you can alter the values but the boiler is not saving them? If so are so remembering to save the new value by pressing the i key until the display stops flashing?

I have made similar errors.

[tabbypurr]

that's another thing it won't do, access the installer settings. Instructions say it's 17 but I'll try 18 too.

NT

[tabbypurr]

the system won't run on the default settings. When a value is adjusted you press i to back out, but it just doesn't react when a setting is adjusted. The only way out is to either press reset or +i, and either way it ignores the change just made.

I can access d0 to d97. I can + & - to give new values. But then pressing i won't get me back out as it always did. I don't remember anything flashing during this process but will check again tomorrow.

NT

[John Rumm]

Once its been installed - one of the things you can change is the installer code. I changed mine to 00 so I could get there without scrolling through. So its possible yours has been changed. Fortunately it only goes up to 99, so trying them all is doable.

[tabbypurr]

the system won't run on the default settings. When a value is adjusted you press i to back out, but it just doesn't react when a setting is adjusted. The only way out is to either press reset or +i, and either way it ignores the change just made.

You got it, just needed to hold the i down awhile.

Thanks, NT

[tabbypurr]

thankfully it wasn't changed!

Cheers NT

[John Rumm]

So was it 17 or 18 in the end?

[tabbypurr]

1. It revealed a whole bunch of data that's not in the instruction book. Who knows what they mean.

NT

[John Rumm]

With vaillant boilers there are usually a ton of settings devoted to the vast range of control options and add ons. So for any given installation there are usually a bunch that are not applicable.