Boiler problem

[Belxvs]

I have a condensing boiler in my kitchen and every time I pour waste water down the sink there’s a gurgling noise at the boiler. I do know that the overflow from the boiler runs into my soil pipe and I have checked both waste pipe work and outside soil pipe work at the manhole everything is clear! I would just like to know could this cause problems with my boiler in the future? Any advice appreciate
Many thanks
Anthony

 

[Maryplumb]

Does the boiler make a gurgling noise while it's running? If so, condensate water may be backing up into it and it would be wise to get an engineer to check. Eventually the boiler should go off.