Vaillant Ecomax Pro 828E Fault Codes
Combi Natural Gas 28 kW 2001-2006 Discontinued
GC Number: 47-044-21
Replaced by: ecoTEC plus 831
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →
Most common fault codes
F.11 F.12 F.13
Your boiler has detected that water isn't moving through the internal pipes correctly, causing it to shut down to prevent overheating.
May be DIY safe · £180-£350
Your boiler has detected a internal blockage that is preventing water from flowing correctly and affecting the pressure.
Gas Safe engineer required · £150-£450
Your boiler has stopped working because the water pressure is too low, and it has shut down to prevent damage.
May be DIY safe · £0-120
All 5 fault codes
Vaillant Ecomax Pro 828E is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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