nl en de
Select your language

Select country

Errors


Boiler type ATI-340H-N Outdoor (T-H3S-OS)

Error code 331

Cause:

Outlet thermistor failure (540 (T-H3) model only)

Solution:

• Check for connection/breakage of wires and/or debris on thermistor (Part #407, 408, 411, 715).