EE
Hayward
General Control Board Error
Heater display shows EE and is unresponsive; no heating occurs.
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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
Internal failure of main control board, Power surge damage, Corrupted firmware, Shorted low-voltage circuit
How to Fix / Troubleshooting
Safety First: Turn off power at the breaker before touching any wiring or boards.
- Power cycle: Leave power off for at least 2–3 minutes, then restore power to see if the error clears.
- Check supply voltage: Verify that the heater is receiving the correct line voltage (120/240V as specified) and that polarity is correct.
- Inspect wiring: Look for shorts, burnt wires, or loose connections on the control board terminals.
- Surge protection: If the error followed a storm or outage, consider adding surge protection to the heater circuit.
- Board replacement: If EE persists and no external wiring issues are found, the main control board is likely defective and should be replaced by a qualified technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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