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Vaillant TurboMax + "F.28"?

Help! Boiler has gone to lock out (red Light on front panel) and shows fault code "F.28", What does this mean? Any help would be appreciated.

James k, March 2005

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Could be all of the above.
Do not attemt to restart.
Get expert help.
You could destroy the motherboard.

Rash, June 2010

same problem, need help

drednot, September 2007

Straight from the vaillant manual >F.28 means No gas;Insufficent gas ;incorect gas valve adjustment ; electrode defective ;ignition lead defect; Electronic ignitor defective,

Steve, March 2005

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home Fix label Heating label_important Home Heating Systems category Vaillant

Vaillant TurboMax + "F.28"?

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Vaillant TurboMax + "F.28"?

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Vaillant TurboMax + "F.28"?

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