Ravenheat CSI 85 DHW?
I'm having problems with the DHW supply from this boiler. Water doesn't reach more than luke warm temperature. Slightly better after reducing water flow but that makes showering difficult. I've replaced the DHW thermistor but there has been no improvement - in fact it's worse as the boiler now cycles on and off every couple of minutes. CH appears to be working fine.
Harry Lyons, February 2010