The PCB on our 3 year old boiler failed last week. The Vaillant engineer has visited and diagnosed this fault but noticed a bolt missing from the heat exchanger. He also noticed the seal was changed at the last service a few months ago to a graphite seal. No-one has touched the boiler since this last service.
The vaillant engineer has advised that the engineer who did the service must have damaged the heat exchanger as these bolts do not snap off themselves. Naturally the engineer who did the service is denying responsibility (& blaming the Vaillant engineer for doing this damage), probably because a new heat exchanger will cost over £300.
My question, to anyone who might know something about these boilers, is whether they would agree with the Vaillant engineer that this damage could only have been caused by the engineer who did the service, and whether the Vaillant engineer might have done this damage when investigating why our boiler had lost all electrical power.
I have been issued with a warning notice that my boiler is dangerous and should never have been left in this condition.
Many thanks for any comments about this.
The vaillant engineer has advised that the engineer who did the service must have damaged the heat exchanger as these bolts do not snap off themselves. Naturally the engineer who did the service is denying responsibility (& blaming the Vaillant engineer for doing this damage), probably because a new heat exchanger will cost over £300.
My question, to anyone who might know something about these boilers, is whether they would agree with the Vaillant engineer that this damage could only have been caused by the engineer who did the service, and whether the Vaillant engineer might have done this damage when investigating why our boiler had lost all electrical power.
I have been issued with a warning notice that my boiler is dangerous and should never have been left in this condition.
Many thanks for any comments about this.