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Errors


Boiler type BLMC-125NA

Error code 255

Cause:

CH setpoint minus ODR min water temperature was  too small (min. 12°C / 22°F) Increase setpoint or  decrease min water temp. 

Increase Outdoor water  temperature min and max values to a difference greater than 22°F (12°C) 

Solution:

Adjust setting to within appropriate range