Viessmann Vitoflame 100 User Manual (English)

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Questions and Answers:

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perrytiffanyAug 3, 2025
What to do if Viessmann Burner starts, but no flame builds?
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  Emily ColeAug 3, 2025
  If the Viessmann Burner starts but the flame doesn't build, ensure the ignition electrode is correctly adjusted and clean. If the ignition electrode is damp, contaminated, or the ignition transformer is cracked, replace them. Also, replace any faulty ignition cable that's shorting to earth. Finally, ensure sufficient combustible gas is available by venting the gas supply line, testing gas availability, checking the electrical connection to the gas combination valve (230 V), and replacing the valve if necessary. Also, adjust the start gas volume.
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christopher58Aug 8, 2025
Why does my Viessmann Burner start, flame builds, but then shuts down?
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  Tammy AllenAug 8, 2025
  If the Viessmann Burner starts and flame builds but shuts down shortly after, you may have a lack of gas. Try cleaning or replacing the gas filter, checking the gas pressure switch settings, and verifying the gas supply pressure. The ionisation current may also be too low, so measure it and replace the ionisation or earth electrode if needed. Check the earth connection for faults, clean the mixer assembly if it's contaminated or correct the switch cam adjustment at the air damper motor if the air damper is incorrectly positioned.
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Christopher GreeneAug 15, 2025
How to fix combustion fault with pulsation and CO formation in Viessmann Vitoflame 100?
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  Hailey PughAug 15, 2025
  If your Viessmann Burner has a combustion fault with pulsation and CO formation, adjust the gas throughput according to the boiler's rated output and adjust the mixer assembly. Correct the switch cam adjustment at the air damper motor, check the pressure in the combustion chamber, and clean the boiler if required. Also, check the flue pipe (chimney).