(Upper left sensor in picture) If your Bestway Lay-Z-Spa AirJet or HydroJet pump displaying and E08 error that will not clear, then your resettable thermal cut-off switch is likely to be faulty. (Lower left sensor in picture) If your Bestway Lay-Z-Spa AirJet or HydroJet pump displaying an E03 or E04 error that will not clear, then your thermostat sensor is likely to be faulty.
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