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 Rob Your Own Question
Rob, Home Appliance Technician
Category: Appliance
Satisfied Customers: 420
Experience:  20 yrs. experience with a major worldwide manufacturer.
Type Your Appliance Question Here...
Rob is online now

I have a Vaillant boiler and no hot water. I am getting code

Customer Question

I have a Vaillant boiler and no hot water. I am getting code S7 pump over run or S8 anti-cycling mode. Please could you let me know what I should do. At the moment I have both the central heating and hot water on constant and the thermostat turned right up.
Assistant: Have you tried power cycling the appliance -- unplugging it and leaving it off for a few hours?
Customer: No - I haven't tried this. How do I do this? Many thanks.
Assistant: Do you plan on doing the work yourself?
Customer: Yes - I can't get through to my usual plumber. Is it something a non-expert can do?
Assistant: Anything else we should know to help you best?
Customer: No - I think that is everything. Many thanks.#
Submitted: 13 days ago.
Category: Appliance
Customer: replied 13 days ago.
Hi please could you help me with my vaillant boiler. No hot water and I’m getting codes S7 and S8
Thank you
Customer: replied 12 days ago.
Please could you let me know when an expert will be able to answer? Thank you
Expert:  JamesI replied 12 days ago.

Hi, thank you for choosing Just Answer, my name is ***** ***** I will help with your query today.

Expert:  JamesI replied 12 days ago.

What is the model of the Vaillant boiler?

Customer: replied 12 days ago.
Eco tech plus
Customer: replied 12 days ago.
Hi JamesI are you able to help with this query please? Many thanks.
Expert:  JamesI replied 12 days ago.

In order to assist you Alice, cAn you please advise the model number of the boiler in question.



Expert:  JamesI replied 2 days ago.

Ive not heard from you in some time, do you still require assistance?