My heater is about a year old. Perhaps 50-60 hours of run time.
I tried to heat the spa today and the inducer fan comes on, the LED flashes for heat then I get a Service Heater light. No LED on the inside panel.
My gas meter is 4 ft away and I see no movement on the meter.
If I'm checking it correctly, I don't seem to be getting 24v to the gas valve. Does this mean my control board is bad? Is this a common failure?
Is there another item to check?