alpine537 Posted September 30, 2009 Report Share Posted September 30, 2009 I have a nordic crown hot tub. The heater won't come on and there are 3 blinking lights under the temperature display.HELP Quote Link to comment Share on other sites More sharing options...
rusty-D Posted September 30, 2009 Report Share Posted September 30, 2009 rule of thumb... something blinking, is a problem with flo, or hi limit error. reset your power for a couple a minutes and see if it comes back. Quote Link to comment Share on other sites More sharing options...
ps558 Posted September 30, 2009 Report Share Posted September 30, 2009 I have a nordic crown hot tub. The heater won't come on and there are 3 blinking lights under the temperature display.HELP Take the filter out and try. heating - replace or clean filter still no heat try it on high speed (will not work if using 110 volts) 90% of the time it is the pressure switch Quote Link to comment Share on other sites More sharing options...
alpine537 Posted October 1, 2009 Author Report Share Posted October 1, 2009 I have a nordic crown hot tub. The heater won't come on and there are 3 blinking lights under the temperature display.HELP Take the filter out and try. heating - replace or clean filter still no heat try it on high speed (will not work if using 110 volts) 90% of the time it is the pressure switch I already tried taking the filter out,nothing.Should I just replace the pressure switch? Thanks Quote Link to comment Share on other sites More sharing options...
ps558 Posted October 1, 2009 Report Share Posted October 1, 2009 I have a nordic crown hot tub. The heater won't come on and there are 3 blinking lights under the temperature display.HELP Take the filter out and try. heating - replace or clean filter still no heat try it on high speed (will not work if using 110 volts) 90% of the time it is the pressure switch I already tried taking the filter out,nothing.Should I just replace the pressure switch? Thanks yes. a word of caution. Some nordic spa packs have the pressure switch mount to the heater inside the control box. You have to make sure most of the water is out of the heater tube before unscrewing it, or it will spray water on the pc board. The safest way is to drain the tub. You can push the handles down on the gate valves to block the water then loosen the heater union to let the water out. Sometimes these valve do not work though Quote Link to comment Share on other sites More sharing options...
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