My Hayward Ecostar variable speed pump just stopped working. The pump is getting power. I checked the filter basket for any sign of obstruction and there was none. I turned the breaker off for 5 minutes and turned it back on. I am hearing a clicking sound every 3-4 seconds and the digital display is showing that the pump is priming but obviously nothing is happening. The pump is 7 years old and although it became noisier over time, it has been working fine. Any suggestion as to what else I might be investigating or am I due for a replacement? If so, I assume I can just swap the motor? Thank you!