Pool and Spa
Questions about Pool Repair? Ask an Expert Online.
does board have any condensation, white marks around solder joints or any sign of minimal corrosion?
the 4 dashes are of course a watchdog safety....something has either tripped the high limit (too hot) or you have a bad board. The board can react differently if damp, cool, hot etc.
Have you noticed a change in operation that correlates with temp/weather conditions?
the scaling of the heater impedes the heat to water contact. Yes there could be a heater issue..or something like scale blocking somewhere.
Even a filter that looks clean but is body oil laden can restrict proper flow resulting in a overheat.
you can ohm the heater element...usually 10-20 ohms shows acceptable range
terrific...just keep this on your end until ready
That is within normal range...that would leave a finicky board or poor connection somewhere.