Vaillant fault codes
Vaillant equipment spans boilers and heat pumps, so identifying the appliance properly matters before interpreting a code.
TradeAssistIQ helps engineers search the relevant appliance and fault together, with manufacturer-derived technical information surfaced where available.
Do not stop at the definition
A code is evidence of a condition detected by the appliance. The useful question is what should be checked next. Where the approved source material supports it, TradeAssistIQ can provide causes, diagnostic steps, expected values, component checks and relevant technical information.
Search accurately
Include the model or range when you know it. That small detail can prevent a fault code or technical value from being applied to the wrong appliance family.
Useful next pages
TradeAssistIQ is an engineering support tool. Diagnosis, testing, repair and commissioning must be carried out by appropriately qualified persons and in accordance with the appliance manufacturer’s instructions and applicable regulations.