Ecomax 835 Wiring

[Bunnyman]

All Vaillant models up to the 2000 turbomax were fused on the live an neutral but after 2000 they fused the live an a lowvoltage fuse on the pcb

Untitled

• Bunnyman
• 26 Mar 2010
• 499

 

[UnhappyCoventry]

As usual the OP has not given us information to come to any conclusion!

Questions to the OP:-

What was the itemised bill showing?

What EXACTLY was the neutral fault?

How many PCBs were damaged while the RGI was faultfinding.

What damage has it done to the PCB?

Can you see a damaged component?

Can you photo it and post it here or email it to me?

Failing that can I come and look at it? ( Which area of Cov? Foleshill Tilehill etc? )



Hi All
Unhappy still on line

I have not looked at the PCB's
I would not know what to look for either
I have requested the PCBs (2 of them )back for inspection
apparantly, when the boiler would not display, new wiring was used..
At this point it was apparent the supply was faulty
I have not had the bill yet, as we have planned to meet today...Monday

I only have his word that the PCB had blown
He did have to buy them, though, my wife witnessed the new installation

 

[Agile]

Thanks for that!

My assessment of the situation is that Bunnyman who specialises in Vaillants takes the view that the boiler would not be damaged by an open circuit neutral connection.

Whilst several PCBs were involved, I am not at all convinced that ANY have been at fault at all. Its common for poor engineers to replace PCBs because they dont know whats wrong wit the boiler. If the first does not cure the fault then they sometimes buy another!

My expectation is that NONE of the PCBs were faulty! The fact that he took them away helps to support that ( although I do take faulty parts away when possible ).

My suggestion is that you should assume that none of the PCBs were needed and only pay the labour element. BUT this is only my view because I would have FIRST checked the supply to the boiler and quickly fixed it without parts.

Lets see what the others think. They think I am rather harsh.

Tony

 

[matt1e]

Thanks for that!

My assessment of the situation is that Bunnyman who specialises in Vaillants takes the view that the boiler would not be damaged by an open circuit neutral connection.

although I agree that it's doubtful an open circuit neutral would damage a pcb, an intermitant/loose connection certainly could

Op what was the origonal fault?
Matt

 

[simond]

Lets see what the others think. They think I am rather harsh

.

I think you are being a bit harsh, on this occasion, Tony.

We don't really know enough about the circumstances to say much about the voracity of the heating specialist involved.

 

[bengasman]

How can any PCB repaired by Joe Bloggs ever be approved by the manufacturer?

Simple, it may have been repaired, as long as the failing parts are replaced with the same items, it remains the original board and thus approved.

 

[Agile]

Which manufacturer agrees with you Ben?

Could you name even one?

Furthermore how do YOU know the specification of the components?

Even Chris had not noticed the resistors on the Puma board in series with the gas valve are designed to go open circuit in the event of an excessive current! Fusible resistor are all part of the design.

Take it one step further and replace quick blow fuses with slow blow as that will stop some blowing! Actually Ideal had to do that on the fan fuse for the Response.

Tony

 

[bengasman]

Which manufacturer agrees with you Ben?

I don't need their agreement to do something, they need to prove it is not allowed, to stop me doing it. It's the old innocent until proven guilty principle.
There is no law, no reg, nor anything else that says you can not repair something. It's the same system that allows competent people to do gaswork in their own home. If you install your own boiler, it works, and nobody gets hurt, you were clearly competent, and nobody will come to arrest you. If it does go pop, you may find yourself an easy target....... for box tickers and point scorers.

 

[vaillantmark]

I'm dumbfounded that anyone calling themselves an engineer would fit 3 brand new PCB's consecutively. Unbelievable!
Sounds like the neutral was wired in to terminal 3 or 4 to me. However, even when wired in reverse polarity the boards don't normally blow.
In my opinion, this ones down to lack of knowledge/experience...
Pay for the repair only. I'd be TOO embarrassed to ask for more personally...

 

[UnhappyCoventry]

Well we have a result people

Although i intended to pay the engineer i confronted him on a few things
1) How did you end up replacing my original board with 2 boards
2) How can you now be sure all the boards aren't working
3) Why did you not test the other boards, when you the established there was a neutral fault at the supply

I challenged him to return with the 2 boards he had taken away

He has agreed to return to test the boards

I am sure at least 1 of these boards will work

We can then discuss the returns policy

I will post the result in a few days

Still unhappy

 

[Agile]

At least he is not ranting and raving and attacking you.

There is still ( some ) hope!

Does he behave as if he thinks that he has done a professional job?

Tony