How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Michael Your Own Question
Michael, Customer Service
Category: Appliance
Satisfied Customers: 9568
Experience:  I have been an appliance repair tech for over 30 years and will help you solve your problems.
Type Your Appliance Question Here...
Michael is online now

ive a viessmann and it keeps losing pressure and i put more

This answer was rated:

hi ive a viessmann and it keeps losing pressure and i put more water into increase pressure which last less than 24 hrs then my boiler flashes a F4 fault. Can you pls help?
Hi and thank you for choosing Just Answer.
I am Tech Michael and I will be assisting you today.
Please be patient as these are technical questions that may require a bit of conversation to solve.
How old is your Viessman boiler?
Also are you losing pressure only to the heating system or all hot water in the boiler?
Ans are there any leaks?
Thank you
Tech Michael
Customer: replied 3 years ago.
I think my boiler is less then5yrs old. No leaks from radiator I think the water pressure is for both boiler and heating
Thank you Tina,
This is a faulty pressure regulator, this needs to be replaced by a plumber.
Its something you could do if you had the proper tools but this is best done by an experienced plumber.
But if you want to do this I will help you all the way;-)
Just let me know Tina.
I wish there were a simpler solution.
I really do.
Have a great day Tina and please rate my service to you kindly before closing;-)
Thank you
Tech Michael
Michael and other Appliance Specialists are ready to help you
Customer: replied 3 years ago.

Thanks Michael..