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Error Code E99/ 100℃/ 000℃
This code indicates a bad 20-40 ℃ water temperature sensor.
Run the filtering function for 1 minute. If the spa display does not indicate an error code and the unit is
circulating water without issue, no further troubleshooting is necessary.
Remove the unit for further testing if Error Code 99 is confirmed.
Before beginning the test, ensure that the temperature sensor connectors are not loose.
1) Begin by swapping out the 20-40 ℃ water temperature sensor. Disconnect the wire connector for the
sensor and clip on a new replacement
Run the control base on a spa. Change the PCB if the problem is not resolved. Follow the instructions on
page 33 to do this.
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