Heat exchanger problem

[Atanas Peev]

Hello everyone do any one had such experience with main heat exchanger on combi boiler
Thank you

 

[ShaunCorbs]

Yep through the core plug new boiler

 

[Atanas Peev]

Yep through the core plug new boiler

What cause such damage the boiler work last week without a problem
Thank you

 

[cjg]

never seen that one, how old is that boiler.

 

[Atanas Peev]

never seen that one, how old is that boiler.

About 5-6year

 

[ShaunCorbs]

Could be just a bad core plug have seen it happen around winter time when the house has been empty eg no heating on and it’s partially frozen

 

[cjg]

dirty system no inhibitor in?