Err 8
GE
Power Supply / Low Voltage Fault
Display shows “Err 8”; time and settings may reset or the display may be blank intermittently.
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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 power transformer, Loose power adapter connection, Faulty internal low‑voltage regulator, Intermittent power outlet
How to Fix / Troubleshooting
Safety first: Work with dry hands. Do not open the transformer casing. Unplug the unit before removing the control cover.
- Step 1 – Check outlet: Plug a lamp or small appliance into the same outlet to confirm it has stable power. Avoid switched outlets.
- Step 2 – Inspect transformer: Verify the GE power transformer is firmly plugged into the outlet and the low‑voltage plug is fully inserted into the control head.
- Step 3 – Test transformer output: With a multimeter set to AC volts, measure the output of the transformer (typically 24 VAC). If there is no output, replace the transformer.
- Step 4 – Inspect control board: Remove the control cover and look for signs of overheating or corrosion around the low‑voltage input area.
- Step 5 – Replace components: If the transformer tests good but the control still shows Err 8 or resets, replace the GE electronic control board.
- Final check: After replacement, reprogram the time, hardness, and regeneration settings.
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Repair Difficulty
Medium
3/5
Required Part
Power Transformer
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