My 3 bar Stuart Turner shower pump has been installed for 6 years with no problems. 6 weeks ago it tripped the whole house RCD in mid shower and did this for the next four showers. I disconnected the pump and took it to Stuart Turner. For £45 they examined and tested it. No fault found. I re-installed it, connected to a different circuit via an isolated fused spur and it was OK for five days. Now it is doing exactly the same thing and trips after about 3 mins of running. Any suggestions?
