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Vaillant
Boilers
3 published entries
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Documented codes
F20
Vaillant F20 fault: overtemperature safety shutdown
High
· Boilers
F28
Vaillant F28 fault: ignition was unsuccessful
High
· Boilers
F75
Vaillant F75 fault: confirm the product family first
High
· Boilers
Vaillant error codes · ErrorBase