Vaillant · ecoTEC pro
F.75 boiler fault code
ecoTEC pro combi
Get a Gas Safe engineer
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Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
What F.75 means
F.75 indicates a pump or water shortage because the pressure increase is insufficient when the pump starts. The manual warns that some shared-table codes may not be visible on every product variant.
Safe check
Do not attempt to adjust or repair the pump or pressure system; arrange a Gas Safe registered engineer.
When to contact an engineer
Arrange a Gas Safe registered engineer to investigate this pressure fault.
Safety notice
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Source and provenance
- ecoTEC pro 24/28 combi Installation and Maintenance Instructions · 0020244995_05 · Appendix D, F.75, printed p. 48
installation and maintenance instructions
0020244995_05