Intex Pure Spa BUBBLE SB-HWF20 - Error Code E97: Dry-Fire Protection; E97 Cause: Hot Water or Thermal Fuse; Replacing the 84°C Thermal Fuse; PCB Replacement for Persistent E97

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Error Code E97
This code indicates dry--fire protection which could be due hot water or a problem with the 84℃
thermal fuse.
Begin the test by installing the spa control base and panel to a tub filled with water to the
recommended level. Turn on the spa control base. Run the heating function for 1 minute. If the spa
displays E97 again, remove the unit for further testing.
Begin by swapping out the 84℃ thermal fuse. Disconnect the wire connector for the fuse. Test
the 84 ℃ temp fuse on the heating element next. Adjust the multimeter to test for resistance using
the "Ω" function. It should near 0 resistance. Replace the temp fuse if the reading is "0 MΩ" or no
reading. Ensure that the plastic covering over the fuse is intact.
Run the control base on a spa. Change the PCB if the problem is not resolved. Reference the
PCB replacement chapter for more details.
No
Display E97
Yes
1. Remove cartridge and run heat system.
2. Replace 84C temperature fuse
3. Or replace a PCB
Go Back to Next Step
END
Run heat 1 min.,
E97?