Mudbug

Thx bro. Im getting 118 volts going to pump but i believe you're right. I drained it last night and plan to take pump out today. It sounds as its just humming.

Checked all voltage and ohms at thermistor, relay and board. heater manifold gets to hot to touch then throws no fault switch. Unplugged heater and restarted spa and it didnt trip breaker. Its a 2007 that been running good till now. Also check cir. pump and all looks well there but not getting bubbles. Is there something else I can check before I buy a new heater? And can I get or change thermostat and or element? Thanks in advance.