nl en de
Select your language

Select country

Errors


Boiler type ATI-110C-N

Error code 121

Cause:

Loss of flame

Solution:

• Check if the Hi-limit switch (Part #412) is properly functioning.
• Check for connection/breakage of wires (Part #413, 708, 709), burn marks on the computer board (Part #701), and/or soot on the flame rod (Part #108).
• Check if there is leaking from heat exchanger (Part #401).