Reading what you have said the problem seems to be a blocked filter.
Vaillant gas water heater problems.
To diagnose this we highly recommend getting an experienced gas safe registered vaillant boiler repair engineer on site to determine what the cause is.
Ignition problems f28 fault code when your vaillant boiler fails to ignite it will leave your home without heating and hot water.
My advice would be to get a professional to have a look at it asap.
Not enough hot water.
When you turn on the central heating or a hot water tap water passes through a pipe that goes over a flame which heats the water up.
I have ruled out problems with gas supply burner dhw microswitch and the diverter valve.
Setting the hot water temperature control high or low makes no difference.
The flow from the hot water taps is fine we have no thermostatic showers or anything like that.
Without that flame the water can t heat up.
The industry standard for water heaters and combi boilers is for them to be turned on with a flow rate of about 2 5 litres per minute.
The water heater constantly modulates between 30 and 100 of its output and thus producing as much heat as required with the minimum energy needed.
Gas hot water heater troubleshooting information no hot water.
This gas hot water heater troubleshooting exercise starts with the thermostat.
Your problem could be the 6 bar water pressure.
Combinable into a system with vaillant heating appliances and controls.
These boilers are designed to work at around 2 bar so you may have blown a gasket inside the boiler causing the problem.
The first thing an engineer will check for is a leak as it is most commonly the source of problems in pressure loss faults.
The boiler is running perfectly for the ch reaching temperature modulating etc.
I have seen vaillant gas water heaters but not any electric ones.
The latest atmomag line is the result of decades of continuous development and state of the art technology providing you with the highest level of warm water comfort and energy efficiency.
Go to gas hot.
Check the pilot light.
In case less water or lower temperature is needed turbomag automatically reduces the burner output.
Vaillant atmomag gas water heaters are especially designed for hot water generation.
Compatible with vaillant range of wall mounted boilers floor standing boilers and solar thermal collectors.