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Fan speeds, ignition sequences, timeouts, shut down sequences etc. Are all there to ensure SAFETY! And then you think you can go replace the processor without knowing the consequences. I back up 831's comments as he is correct in what he says and most of the advice that you have been given...

I'm not aware of any logical changes to the software however, the ramp up sequence is both dynamic and dynamically different between modes when ebus controls are used. The ignition sequence is standard and set. As the book says, it requires a minimum flow related to each model. This doesn't mean...

Looks like you're dealing with a flow or transfer issue as has already been suggested by experienced engineers and overlooked or ignored. It seems you may think that somehow tweaking settings on the boiler of which you don't really understand or know what they are for and don't know the adverse...

Alec, I never realised that you would take a simple question so badly. I'm sorry for you that your customer ended up having to respond to a technical query where you could not. I appreciate that it doesn't make you look very good and that you may feel you need to redeem yourself. However...

Errr... Who has told you to do anything???... A question was simply asked Alec... why are you trying to avoid answering it? It's not a big secret that the public mustn't know. If you are blaming the boiler for being at fault here... Then surely you can substantiate it?? if you are struggling...

Oh... I sincerely didn't realise it was your installation... I guess it is then judging by your defensive response. I was merely asking a simple question based on facts [FACTS!!!] Your response is unfounded, non constructive and non factual. As for the "advice"..... You can keep it. It...

No thank you, I don't need the formula, it's the answer i'm asking for.. Why can you not answer it now?

Vince101, can I ask who installed you boiler/system/controls etc if you know? Alec.. Some good factual information here... So.... maybe you can answer.. at 17KW (according to D0) 1. What is the current flow rate through this boiler based in the info above? 2. What is the minimum flow for...

surely it's only relative on an open vent system. If its a sealed system, surely the only thing that affects existing pressure is temperature.

Ah hah.. Asked before I viewed it... lol.

Is[/url] that your web site Bunnyman?

Can anyone help? Just plumbed my washer/dryer back in after not needing it for the past year (Long story). Ran it through a 95 degree empty wash to clean any soap liquid off as I did before I unplumbed it a year ago. All was good to go. Did a wash and dry and it took the RCD out half way...

It is a communication fault between the main pcb and the user interface. It is usually caused by a low voltage short circuit, causing an incorrect potential difference in VDC to the UI

That and all the "tweaking" and "fiddling" with settings that people know very little of what they are adjusting and why they are doing it. Speak to a decent installer and he'll tell you he has no issues with the appliances and controls. Speak to a cr*p installer, and he'll tell you it's the...