The CD with the software for the Diagnostics for the Vaillant boiler Vrdialog 8102 is very out of date. But with so many different controls on the market, it can be confusing to understand exactly what these products do, and which will be the best for your home. If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. The gear ratio between valve shaft and motor shaft is high so a minute amount of resistance to turning in the motor requires a lot of force from the spring.

Used primarily in larger properties for zoning, Drayton's 2 port, diverter and mid-position valves are available in 22mm and 28mm. I know it's not expensive or difficult to swap the head but I'm tired of repeatedly swapping these every couple of years! by Schneider Electric in January 2014, the Drayton brand became part of the worldwide leading manufacturer of energy management and control products. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging .Yes, I do keep a second momo to hand, ready to install, but so far I have not needed to make use of the spare momo. Yes I know in some systems the boiler is controlled by a micro switch in the valve actuator(s) indicating that a valve is open and heat is needed.

Here you can find useful information, training modules and wiring diagrams to help with your day-to-day job. My question is can the actuator be replaced with a different more reliable model without changing the valve itself? You mentioned that if the momo lost power, then also would the boiler - that is only true sometimes, but it cannot be guaranteed. Will the Region plug you supply plug into the board on the boiler where the existing actuator plugs in? Please note that if the item requires testing your refund will take approximately 14 days from receipt at Adlink UK Limited.Could replacing the actuator only fix the problem or would you recommend to replace the entire combination (actuator + valve)? This is due to unprecedented demand on their services due to several factors, including general Christmas demand.

By far the most failure prone part of my entire system - which is why I have now switched it over to a momo. Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item.If you can remove the actuator and control the flow by manually rotating the shaft, then it will be the actuator only. A replaceable snap-on actuator for Drayton 2-port valves with industry-standard wiring and 1m cable.

Credit subject to status, UK residents only, Toolstation Ltd, acts as a broker and offers finance from a restricted range of finance providers, PayPal Credit is a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH. If the MoMo does not close because the power has failed then the boiler will also have lost power and shut down.

Around 70% of UK homes do not have the minimum level of controls meaning that thousands of people are missing out on the cost savings they can bring. p>The Drayton ZA5 is a highly efficient 2 Port Zone Valve designed for controlling the flow of water in domestic central heating systems.