hi there
i have a siemens rwb9 programmer and a potterton suprima 40L boiler on a pumped system.
when we turn hot water on, boiler does not light, green light on boiler flashes and pump runs but when we turn central heating on, boiler lights ok.
also if hot water heating is turned on while cetral heating is on, it heats ok.
any ideas please
thanks in advance
in answer to your questions it is a siemens 3pmp v22 3 port motorized valve thanks again
i have a siemens rwb9 programmer and a potterton suprima 40L boiler on a pumped system.
when we turn hot water on, boiler does not light, green light on boiler flashes and pump runs but when we turn central heating on, boiler lights ok.
also if hot water heating is turned on while cetral heating is on, it heats ok.
any ideas please
thanks in advance
in answer to your questions it is a siemens 3pmp v22 3 port motorized valve thanks again