EE
AquaCal
Internal Control Board Error
Display shows EE or EEr; unit is non‑responsive or stuck in error.
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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
Corrupted firmware, Failed microcontroller, Voltage surge damage, Moisture intrusion into control compartment
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before opening the control panel.
- Power cycle: Leave power off for at least 5 minutes to allow capacitors to discharge, then restore power and see if the error clears.
- Inspect control compartment: Look for signs of water, condensation, or insect nests. Dry the area thoroughly and correct any water entry issues (damaged gaskets, open knockouts).
- Check ground and neutral: Ensure the unit is properly grounded and that neutral/ground connections are tight, as poor grounding can cause logic errors.
- Firmware/service: Some AquaCal boards can be updated or reset only by authorized technicians. If EE persists, schedule service to replace or reprogram the control board.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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