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Cheers, my plumber is scratching his head over this.
I politely suggest you find another engineer. It’s an easy problem to diagnose and if properly looked after your boiler should be ok for many years yet. It’s better than a Worcester.
 
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Easy repair for a GSI I very much doubt its the heat exchanger time for a fresh pair of eyes on the case . Kop
 
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I politely suggest you find another engineer. It’s an easy problem to diagnose and if properly looked after your boiler should be ok for many years yet. It’s better than a Worcester.

Sounds like good advice, many thanks appreciate it.
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Easy repair for a GSI I very much doubt its the heat exchanger time for a fresh pair of eyes on the case . Kop

Many thanks, will call Viessmann UK tomorrow and ask for advice regarding getting one of their trained engineers out.

Certainly don't want to get a new boiler if my current one can be repaired.
 
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Hi, just a quick update for you guys regarding my Viessmann pressure gaining issue.

Booked Plumber direct from Viessmann and he came down and sorted it within an hour!

Heater Plate Heat Exchanger 20 Plates 4 O-rings.

Pressure has remained stable ever since, all now ok!

Once again many thanks for all your info and help, much appreciated.
 
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Hi, just a quick update for you guys regarding my Viessmann pressure gaining issue.

Booked Plumber direct from Viessmann and he came down and sorted it within an hour!

Heater Plate Heat Exchanger 20 Plates 4 O-rings.

Pressure has remained stable ever since, all now ok!

Once again many thanks for all your info and help, much appreciated.
Cheers for letting us know , first one pin-holed I have ever heard of .
 
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