Mayurw, you should not be touching any gas or safety devices on boilers if not gas registered. That included APS and PCB.
A professional repairer woild not be charging for parts which are not needed.
What are you going to do about your friends boiler now?
The obvious thing is to call an RGI
Tony
A professional repairer woild not be charging for parts which are not needed.
What are you going to do about your friends boiler now?
The obvious thing is to call an RGI
Tony