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Display flashes "FLO" (FLOW)
Display flashes "FLO" (FLOW)
- This indicates that there is a water flow problem or
defective pressure switch.
- You may have an air lock at the heater barrel. See page
11 for priming the pump.
- Make sure filters are clean
- Check that service valves are open
- Ensure water level is at water line
- Check for obstruction of flow
Display flashes "FLC"
Display flashes "FLC"
- This indicates that the flow switch is stuck in the
closed position and should be replaced.
Erratic operation at topside panel
Erratic operation at topside panel
- Shut off system and restart
- Check for debris inside topside panel control housing
- Check cable connection at the topside control, remove,
clean and reconnect
- Try new topside control
No heat
No heat
- Check the topside control for "HL". This indicates that
the system has overheated. Make sure the temperature
has fallen to less than 112° F and press the heat key to
reset.
- Check that the temperature set point is higher than
actual tub temperature.
- Check for flashing LED at topside control to indicate
heat demand
- Check to see if the pilot light at the equipment panel is
on. This indicates if power is actually getting to the
heater element. If this light is on and there is still no
heat, the element should be checked for continuity. If
there is no continuity, the element needs to be replaced.
Over
Over
heat
heat
- If the water is too hot and the high limit has tripped the
breaker, the water must be allowed to drop to less than
112° F before it will reset. Reset by pressing the heat
key at the topside control.
- The circulation of the water may be too low, allowing
the heater body to overheat. Be sure that all valves are
fully open to allow maximum water flow over the
heater element.
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