SE
Dream Maker Spas
Sensor error or sensor out of sync
Display shows SE or SEn and spa may behave erratically
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Temperature and high-limit sensors reading too far apart, Loose sensor connections, One of the sensors failing intermittently, Control board misinterpreting sensor data
How to Fix / Troubleshooting
Safety first: Turn off power at the GFCI breaker before accessing the equipment bay.
Steps:
- Inspect both sensors: Locate the temperature and high-limit sensors on the heater tube or sensor wells. Ensure both are firmly seated and their cables are intact.
- Reseat connectors: Unplug both sensor connectors from the control pack and plug them back in securely.
- Compare sensor readings (if possible): With a meter and thermistor chart, measure resistance of both sensors at the same water temperature. Values should be similar. A large difference indicates a bad sensor.
- Replace faulty sensor(s): Install compatible Dream Maker/Balboa/Gecko sensors as needed. Replace both as a pair if they are the same age and one has failed.
- Control board check: If new sensors do not clear SE, the control board may be defective and should be evaluated by a spa technician.
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Repair Difficulty
Medium
3/5
Required Part
Water Temperature Sensor (Thermistor)
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