Hello,
I am running a pentair mastertemp250na (6-8 months old) in a hotel indoor pool. Heater keeps throwing the HLS (high limit switch) error then clears and tries again. I have replaced the HLS, control board, ignitor, removed manifold and flushed insides to verify water is flowing through. At this point I have no idea where to go next.
I am running a pentair mastertemp250na (6-8 months old) in a hotel indoor pool. Heater keeps throwing the HLS (high limit switch) error then clears and tries again. I have replaced the HLS, control board, ignitor, removed manifold and flushed insides to verify water is flowing through. At this point I have no idea where to go next.