Margaret,
I find this quite odd. Are you sure that the installer of the boiler was aGas Safe registered individual and that the installer of the system (if different) was a a credible plumber?
The issues you describe and the actions being taken just don’t seem credible to me.
On the basis that the boiler is performing properly, any reputable plumber should be able to diagnose (and probably fix) the problem with your hot water on site within 1 to 2 hours.
A good rule of thumb, is to diagnose the problem, think through the solution then get your tools out and implement it. Be very wary of people get their tools out before having thought through what the problem is
I find this quite odd. Are you sure that the installer of the boiler was aGas Safe registered individual and that the installer of the system (if different) was a a credible plumber?
The issues you describe and the actions being taken just don’t seem credible to me.
On the basis that the boiler is performing properly, any reputable plumber should be able to diagnose (and probably fix) the problem with your hot water on site within 1 to 2 hours.
A good rule of thumb, is to diagnose the problem, think through the solution then get your tools out and implement it. Be very wary of people get their tools out before having thought through what the problem is