i have a worcester bosch 240 with no hot water.the rads work ok.some times when i put the rads on the tap water will heat up a little bit but not for long
This is a very popular complaint. Some suggest that when the heater collects lime over time the sensors overheat and the control opens to protect from burning out. Lime also makes the gas valve adjustment stick in position. This does not happen if the unit is disassembled, cleaned, and tested yearly as the factory repairpeople do on the continent.