Hi my elderly mother has a oil fired grant vortex 26 external boiler which last week the flow sensor decided to develop a small split spraying the entire inside of the housing with water until the rcd suppling the boiler tripped. i have replaced the flow sensor and allowed the boiler to dry out but the rcd will still not hold. I can turn on the supply and some leds come on, on what looks to me like relays but when i turn the boiler main switch on it trips out. is there anything that is likely to have been damaged by the water? any help would be appreciated as i cant seem to get a plumber that will come and look. lots of promises but no-one actually turns up
many thanks
many thanks