Störungen / Fehler

• - wähle Typ -
• ATI-110C-N
• ATI-240H-N Indoor (T-H3J-DV)
• ATI-240H-N Outdoor (T-H3J-OS)
• ATI-310C-N
• ATI-340H-N Indoor (T-H3S-DV)
• ATI-340H-N Outdoor (T-H3S-OS)
• ATI-510C-N
• ATI-540H-N Indoor (T-H3-DV)
• ATI-540H-N Outdoor (T-H3-OS)
• GDHE-75

• - wähle Code -
• 031
• 101
• 111
• 121
• 311
• 321
• 331
• 391
• 441
• 510
• 551
• 611
• 651
• 661
• 701
• 711
• 721
• 741
• 761
• 991

Kessel Typ ATI-540H-N Outdoor (T-H3-OS)

Störungscode 721

Ursach:

False flame detection

LÖsung:

• For indoor models, check if condensate drain is installed on the vent collar of the water heater.
• Check ifthere isleaking fromheat exchanger(Part #401)