My spa is not heating. Whats wrong?
First, check your filter. Dirty or clogged filters are one of the most common causes of heating problems. Try to operate the spa with no filter in (you may need to push the reset button on your spa pack). If everything works correctly at this point, then the filter was your problem. Next, check the heater indicator light. If it is not glowing, then you are likely not getting power to the heater. You could have a defective or stuck thermostat, high limit switch (check by pushing reset button), pressure switch, or flow switch. If none of these components is the culprit, it may be a bad relay or contactor. If the light is on, but water is not circulating, the heater will not work. If the indicator is on, and water is circulating, then you most likely have a defective heater element.
