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Error Code
Low water level (system for Closing to
E302
atmosphere)
Water filling problem
E311
Water recharge problem
E351
Hot water exit temperature sensor
E407
malfunction
Controller relay malfunction
E515
DIP switch setting malfunction
E517
EEPROM malfunction
E594
Input and memory malfunction
E615
28
Error Code
Self-diagnose
Please fill water by the installed filling loop
(refer to the valve kit manual)
Please reset the boiler
Please check the filling loop, then reset the boiler
Please switch off hot water, then reset the boiler
Please reset the boiler
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