Hi everyone hope you can help, I changed my surflow pump 7weeks ago and it's now started to go slow, so slow the water wasn't coming out, I went to Wfp shop all he could think of was a new flow control, so I've stuck one on. It works for abit all the while saying bat. I've checked battery it's fine, now when I go to switch it on it cuts it self out write away checked connectors seem fine, any ideas apart from start again?