E08
Aqua Dial
Low Voltage / Power Supply Fault
E08 error and the display is blank or very dim, unit appears dead
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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
Failed Aqua Dial plug-in transformer, Loose low-voltage connector at control head, Blown internal fuse on control PCB, Short circuit in wiring harness
How to Fix / Troubleshooting
Safety first: Turn off power at the mains before handling any electrical components. The control head typically uses low voltage, but the transformer is connected to mains.
- Check outlet and fuse: Verify the wall outlet has power and any fused spur is on and not tripped.
- Inspect transformer: Ensure the Aqua Dial transformer is warm (but not hot) and not emitting any burnt smell. If you have a multimeter and are competent, measure the low-voltage output and compare with the rating label.
- Check low-voltage plug: Confirm the low-voltage plug is fully inserted into the control head socket.
- Inspect internal fuse: With power disconnected, remove the control cover and locate any PCB-mounted fuse. If blown, investigate for shorts before replacing with the exact same rating.
- Replace transformer or PCB: If the transformer has no output or the PCB is visibly damaged, replace the faulty component with the correct Aqua Dial part.
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Repair Difficulty
Medium
3/5
Required Part
Low Voltage Transformer
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