Code E97 indicates dry-fire protection which could be due to hot water or a problem with the 84℃ thermal fuse:
- The 84℃ thermal fuse is faulty: Perform a test as instructed below.
- The PCB is not functioning and requires replacing.
- Step 1: Begin the test by installing the spa control base and panel to a tub filled with water to the recommended level.
- Step 2: Turn on the spa control base. Run the heating function for 1 minute.
- Step 3: If the spa displays E97 again, remove the unit for further testing.
- Step 4: Begin by swapping out the 84℃ thermal fuse. Disconnect the wire connector.
- Step 5: 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.
- Step 6: Replace the thermal fuse if the reading is “0 MΩ” or if there is no reading. Check that the plastic protection over the fuse is undamaged.
PCB Replacement:
- Refer to the instruction of Opening the Control Base to remove the screws and open the cover.
- Remove the 2 screws that secure the white PCB cover to reveal the PCB. Once PCB internal layout is appearing. There are two screws to hold the entire PCB parts.
- Disconnect all the sensors / input terminals and all the around the PCB. Cut off the nylon belt which secures the internal wiring to the board. Rotate the brown cover to detach the black cord.
- If the product is under warranty, contact the seller for a claim.
- If the product is out of warranty, seek repair service centers.
