I have recently installed 8x HR92s + BDR91 relay box wired to a Worcester Bosch Greenstar 30si boiler (thread)

All was working well for the last coupe of weeks.....until the red boiler "reset" light started to come on when we were having showers. These seemed to happen if the central heating (BDR green light) was on or not. It was fine the rest of the time. I could reset the boiler and it would be okay until we stopped using the shower (I sometimes had to do this a few times)

Tonight, the reset light has come on without the showers being on and keeps coming back on after a reset.

I will get a heating engineer to look at this, but has anyone come across a similar problem?

Many thanks.