can anybody help. im currently house sitting for a friend and have just changed the pump on his central heating system. i turned the boiler off first and fitted the pump correctly but when i tried to relight the boiler, the piezo ignition has packed up. is there any way of manually lighting this boiler? i have tried to put a fire lighter towards the back of the boiler where i can see the igniter, but am having no luck. the firefront is a baxi bermuda inset ts or bs. thanks in advance