dugathome Posted May 18 Report Share Posted May 18 I have an older Tiger River Bengal. The heater relay board failed recently so I replaced it with a new 4th generation heater relay board. When I power the tub up the relay board functions properly and heats to the set temperature one time. Then the tub cools back down to ambient temperature. Heater LED solid red limit LED solid green d10 LED flickering green d9 LED blinking red. If I power cycle the tub, it heats properly again one time to set temperature. Does this mean my motherboard has failed? Or is there something else I should be looking at? Thanks Quote Link to comment Share on other sites More sharing options...
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