Hello, I got some weird problem with the pump controllers. I made an inquiry to several companies, but did not recieve an answer yet. I will post it here. Anybody know a solution? Thanks. " Dear Sir/Miss, We have some difficulties with the Spring Pump Controller Units. We keep getting the "P5" error code. Although the pumps are connected, and tested to be operational. The pressure switches are also tested, and functioning normally. All wires are connected properly. Could you inform us on what could be wrong? Could a power surge have damaged the controllers so that they will not longer detect the pumps? Could a battery exchange have damaged the controllers so that they will not longer detect the pumps? And of course, what would be the solution. With many thanks in advance, And regards, ".