E16
SPRSUN
EEPROM / Parameter Memory Error
Display shows E16; unit may not start or may shut down unexpectedly.
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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 settings in main control PCB, Electrical surge or static damage, Faulty main PCB memory chip, Incorrect firmware
How to Fix / Troubleshooting
Safety first: Turn off power before accessing the control board.
- Power reset: Disconnect power to the SPRSUN heater for at least 5–10 minutes to allow the control to fully reset, then restore power.
- Factory reset (if available): Use the control panel menu to restore factory default parameters according to the SPRSUN service manual.
- Surge protection: If your area has frequent surges, consider installing a surge protector on the heater's supply.
- Board replacement: If E16 persists, the main PCB may be defective and should be replaced with a correct SPRSUN control board programmed for your model.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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