JNC Posted May 16, 2015 Report Share Posted May 16, 2015 I have a Jandy 250 LoNox natural gas heater. The unit is about 11 years old. The heater won't reach the temp set on the RS6 control. It seems to start cycling on and off at about 95 degrees. Topping off about 98 - 99. The spa is set at 101. It will work properly once in a while. I have repaced the temp sensor, and flame sensor. The blower motor was going out. I thought that may have been the issue also. After I replaced it the unit heated the spa right up to temperature. Then the same issue started again. I'm out of ideas on what the issue is. Anyone experience this? Thoughts on what the cause may be? Quote Link to comment Share on other sites More sharing options...
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