Why does my hot tub heater keep failing?
Why does my hot tub heater keep failing? Low flow in your spa or hot tub is most commonly associated with a dirty spa filter. If your spa heater won't heat, remove and clean the filter(s) rule out a pressure or flow rate problem. Low water level, a clogged pump impeller, closed valves, clogged pipes or blocked spa drain covers can also cause flow issues. Do hot tub heaters have a reset button? A spa heater has a high-limit reset button. The spa's pump and heater provide a soothing environment by circulating water through jets and increasing it to the...