Vaillant 831 and Vaillant VCR470 error message water deficiency, heat generator 1

[triplexxx2070]

Hello,

Have the above boiler and controller displaying the message water deficiency, heat generator 1.

Anyone know about the issue and how to fix?

TIA

 

[oldbuffer]

Top up the boiler water pressure via the filling loop.

 

[triplexxx2070]

Top up the boiler water pressure via the filling loop.

Pressure was down to 0.7 bar

 

[Harry Bloomfield]

Pressure was down to 0.7 bar

So top it up. How long ago was it last topped up?

 

[triplexxx2070]

So top it up. How long ago was it last topped up?

I had a service done about 5 weeks ago, its a rented property.

 

[oldbuffer]

1. As a landlord it is your responsibility to ensure your tenants have heating and hot water. However, they cannot expect instant attention.
2. Have a look at the installation instructions for your boiler to see how the system pressure is topped up. If you don't have them they are available on-line.
3. From memory it requires two grey plastic handles under the boiler to be turned through 90 degrees. Water will enter the system and re-pressurise it. When it reaches around 1.3 bar, close both valves.
4. You could:
4a. Explain to the tenants how to do it. It is not unreasonable to expect them to be able to undertake such a task.
4b. If you are comfortable with the method, go round and do it.
4c. Get a heating engineer to do it, perhaps the people / person who serviced it.
5. Get your tenants to keep an eye on the pressure. If it drops soon after being re-pressurised, it suggest a fault with the heating system or the boiler.

 

[triplexxx2070]

1. As a landlord it is your responsibility to ensure your tenants have heating and hot water. However, they cannot expect instant attention.
2. Have a look at the installation instructions for your boiler to see how the system pressure is topped up. If you don't have them they are available on-line.
3. From memory it requires two grey plastic handles under the boiler to be turned through 90 degrees. Water will enter the system and re-pressurise it. When it reaches around 1.3 bar, close both valves.
4. You could:
4a. Explain to the tenants how to do it. It is not unreasonable to expect them to be able to undertake such a task.
4b. If you are comfortable with the method, go round and do it.
4c. Get a heating engineer to do it, perhaps the people / person who serviced it.
5. Get your tenants to keep an eye on the pressure. If it drops soon after being re-pressurised, it suggest a fault with the heating system or the boiler.

The first question I asked my tenants was if there was hot water and heating, luckily it was still working at 0.7bar.
I sent him a Youtube video showing how to fill the boiler, still waiting for some feedback.
Agree will tell them to keep an eye on the pressure, if the issue continues with teh pressure falling ill have to get my engineer to fix.

Appreciate the great advise