E19
Dettson
Control Memory / EEPROM Fault
Boiler displays E19 and indicates internal memory or parameter 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 control parameters, Power surge damage, Faulty Dettson control board memory chip
How to Fix / Troubleshooting
Safety: Turn off power before accessing the control board.
- Power reset: Disconnect power for several minutes to allow the control to fully discharge, then restore power and observe.
- Factory reset (if allowed): Some Dettson controls allow a factory parameter reset via the installer menu. Only perform this if you have the installation data to reprogram all settings.
- Surge protection: Consider adding surge protection to the boiler circuit to prevent future memory corruption.
- Board replacement: If E19 persists, the control board's memory is likely damaged and the board must be replaced and configured by a qualified technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Dettson boiler control board
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