Hello, I am new to owning a hot tub...we bought a house with a Sundance 680 series about 2 months ago. Just a few days ago, I received an fl 1 error code. Neither pump will run, light won't turn on, fuse checks good, and I have reset the breaker. I also disconnected the flow switch pins from the control board and just tried resetting everything. Also, I removed the filter and nothing changes. My question is, what should I do to get my pumps and heater running from here? My concern is that here in NW Montana, it's getting pretty consistently cold and I am a bit worried about freezing since it is an outdoor tub. If there is any other troubleshooting/information I can collect to help solve the problem, it would be much appreciated.