Er6
Raypak
Internal Control Board Communication Error
Raypak controller displays Er6; unit is locked out.
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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
Faulty main control board, Loose low‑voltage connections, Electrical noise or surge damage, Incorrect wiring of external controls
How to Fix / Troubleshooting
Safety first: Turn off all power sources before touching control wiring.
- Inspect low‑voltage wiring: Check all terminal blocks for loose screws and verify that external controls (timers, automation) are wired per the Raypak diagram.
- Reseat connectors: Gently unplug and replug ribbon cables and connectors on the control board to clear oxidation.
- Power cycle: Leave power off for 5–10 minutes, then restore and observe if Er6 clears.
- Replace control board: If Er6 persists, replace the Raypak main control board with the correct part number for your model.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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