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Billy, Technician
Category: Pool and Spa
Satisfied Customers: 22541
Experience:  Licensed in Hydronics and Boilers
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I have a Cayman Series Sundance Spa. Manufactured in 2005.

Customer Question

I have a Cayman Series Sundance Spa. Manufactured in 2005. The pump and motor are running but the spa will not heat. There is a flashing FL 1 on the control panel. What does this mean?
Submitted: 1 year ago.
Category: Pool and Spa
Expert:  Billy replied 1 year ago.

I am very sorry your question has not been picked up yet.

I just logged on and found you had not been assisted.

Please let me know if you still need help and I will do my best. Please do not "Rate" as we have not worked toward an answer yet.

If you would like to proceed let me know by replying. Once again use reply

Customer: replied 1 year ago.
I still have not received an answer
Expert:  Billy replied 1 year ago.

this mean even though the pumps are running a flow switch is not closing.

There is a switch activated by the water flow...this in turn lets the heater come on.

It can be plugged filters, weak flow, bad flow switch.