Hello thingy.. I thought the problem had cleared up as I believed I had accidently reset it on Wednesday however it began to display the word serial on the control panel. I read up on it and it said connection fault between boiler and panel. To reset break the main current and then start again. So how do you break the main current, I disconnected the hook up, disconnected the battery turned off the master control panel I then reconnected battery, hook up and turned on the master control panel and now the panel as gone blank again, not what I expected