My Starite SR400NA heater is 10 years old. I bought the house 2 years ago and it has worked flawlessly until just recently. The heater is controlled from my Jandy Cabinet by an Aqualink RS-6.
The heater did act up a couple of times before it completely quit responding. On New Years, it was about 30 degrees outside, I turned on the spa and heater and the heater started up then I noticed it stopped. I turned off the heater from the RS6 control in the house, then turned it back on, heater fired up and worked normal.
A week later I turned on the spa and heater again. It was 30 degrees out again. It fired up for about 10 minutes and shut off. I cycled the on off heater button in the house. The heater did not re-fire. I looked at the unit and I believe it had a service system LED on. I may very well have been the Service Heater LED, not sure.
But now when I turn on the spa and heater, I get no LED at all other than r3 (firmware No.)on the digital temp display on the heater. I have put the system in service mode at the Jandy Panel near the pumps and heater, and turned on the spa, then the heater and I get the same thing, just an r3 on the led, so service system or service heater leds.
The green SPA light is on in the Jandy cabinet and the heater light in the Jandy cabinet comes on when I manually turn on the heater. But I do not ever recall a green SPA light on the control board on the heater coming on, but I never much looked at it because the auto controls always work. Following the troubleshooting guide in the manual basically says "replace control board" if Spa green light is on and no service heater or service system lights come on. I get no green Spa light on the control board.
The heater sits out in the weather, and after 10 years the membrane keyboard looks bad. The plastic covering has completely de-laminated and come off. I had a service guy check the pool when I bought the house, he said my days were numbered on the controll board LOL!
Question 1: Should the green Spa led be lit up on the control board when the spa is started from the RS6 or from the Jandy Cabinet?
Question 2: Should I try a new membrane keyboard first before replacing the control board or is there something else I can check.?
Thanks in advance for any suggestions.