Vaillant boiler rusty looking water stains..,

[back2thefuture]

Hi all,

We have a vaillant 438 boiler. Are these rust stains normal?
Many thanks

 

[Deleted member 267285]

No, they’re not. It suggests to me a condensate issue.

 

[back2thefuture]

No, they’re not. It suggests to me a condensate issue.

What does that mean exactly and is this a problem?

 

[DP]

First picture, condy pipe, black connection to heat exchanger- I suspect it is wet from condensate leakage (reflection on condensate). Also, floor seems wet and historic leak marks

 

[Deleted member 267285]

What does that mean exactly and is this a problem?

It could be a problem if it’s still leaking condensate water, as it’s acidic, and could eat through the metal. If it’s a historic leak which has been repaired then nothing to worry about. When condensing boilers are in operation, they produce small quantities of condensates water, hence the name condensing boiler, which the condensate needs to be taken away, from the heat exchanger to waste.

 

[back2thefuture]

Thanks guys, so the best thing would be to get an engineer out to change this rectangle looking part?

 

[Harry Bloomfield]

Thanks guys, so the best thing would be to get an engineer out to change this rectangle looking part?

Maybe, or possibly the drain is obstructed and causing an overflow.