Apologies if this has already been answered but I can't find it anywhere!
Had a WB Greenstar 37cdi installed last August. System is working fine - good heating and DHW but every time the boiler is on, at some time during the cycle, it emits a single "clonking" or "whooping" noise. I first thought it was when it either fired up or shut down, but sometimes it happens in middle of cycle.
Anyone else experienced this or should I just get on to WB for warranty visit?
Thanks
Had a WB Greenstar 37cdi installed last August. System is working fine - good heating and DHW but every time the boiler is on, at some time during the cycle, it emits a single "clonking" or "whooping" noise. I first thought it was when it either fired up or shut down, but sometimes it happens in middle of cycle.
Anyone else experienced this or should I just get on to WB for warranty visit?
Thanks
