Pool and Spa
Questions about Pool Repair? Ask an Expert Online.
Hello, Is the circulating pump running?
You see the heater cannot run until a flow switch makes contact. This is a switch in a water pipe that when the water is pumping through it closes this switch.
When FLO appears it means either the water is not pumping....or if the water is pumping it means the switch is likely bad.
Yes you can..but first test it by starting the pump..then connecting the wires direct together to bypass the switch.