Heating issue

[Tom84]

• I have Google nest third generation connected to Viessmann boiler through open therm.

I am having difficulty with heating as the boiler never goes on full capacity even if the house is cold! 

• The boiler supports opentherm technology. 

[Jojo86]

Hi,

I am having the same problem with veissman boiler and open therm. The thermostat has gone up 2 degrees in 4 hours? 

It is setting the boiler temp to only 50oC and I can't adjust it on open therm mode. 

Hopefully someone can answer the problem!

[luciaaa]

Hi there!

Thank you for reaching out to the community. I'm truly sorry to hear that the boiler isn't working at full capacity. I understand how important it is for the boiler to function properly, especially during cold weather. I'll do my best to help you!

To better assist you, please answer the following questions: 

• When was the last time your boiler received maintenance? 
• Have you recently had your thermostat or heating system serviced, in addition to the boiler?
• What is the status of the Heat Link's LED light?
• When was the thermostat installed? 
• When did the inconvenience start?
• Were there any power outages?
• Have you tried any troubleshooting steps?
• Does the display show a water droplet inside of a circle? This icon suggests whether or not hot water or bacteria prevention is activated.

This information will help me to provide you with accurate troubleshooting steps. Thanks in advance. 

Please keep me updated.

Best regards,

Ana