hetline is a derivative of the baxi potterton 80/105 performa boilers same problem with the hot water the diaphragm is probably at fault possibly split the baxi repair kit 511137 is what you may well need open a hot tap water will flow out look at the demand light on the front of the boiler if no demand light for hot water has ignited then its probably the rubber diaphragm split if you get the demand light lit and still no hot water then look at the 3 way valve assembly
byron, October 2010
