Hi Can anyone assist ? serviced a Kinder Oasis gas fire today,everything working fine until,final check where the fire would only come on up to half power.,,controls take it to half ok and run up to full but flame does not increase,I originally thought that it was the control switch not opening the valve enough.but to turn it off you have to go to the top of the run of the switch,which it was doing fine.which seemed to be that the control was ok. So basically the control does run the switch all the way to the top but the flame does not increase.
Disconet link at valve. Pull push rod manually. If it works, then there is an alignment problem. If same sympton occurs, I would suspect restricted injectors, I've changed a few. Is inlet pressure ok? Have you questioned user about recent symptoms?