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, .
Sounds like you have an issue with the power supply to the spa.. I bought a new hot tub pump a few months ago, but it stopped working – is there a warranty ?. .. The heater may not be working right now because the pump is not coming on.
Air locks are a relatively common problem in hot tubs, but they are simple to fix in. line pressure to protect the hot tub heater from coming on when the water is not. *Looking for basic hot tub pump terminology and troubleshooting, go here.
"My spa will not heat" is the number one complaint we hear, it accounts for. is working properly (i.e. spa is set in the heater/filter cycle and water is flowing from