Followed the simple instructions and bingo everything working. What is the difference between AMV and AME actuators? Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Im assuming that the third valve is for the hot water? To close the valve, power is removed. Danfoss Hp22b 2 Port Motorised Valve With Actuator 22mm 087n6642 At H P W Buzzing Sound From Motorised Valve Since Heatmiser Install Diynot Forums Y Plan Central Heating System Wc4 B Wiring Centre Guide Manualzz Y Plan 3 Port Valve Cannot Have Ch On By Itself Diynot Forums How A Y Plan Heating System Works Design Boiler Boffin A bit of wiring and make sure you get the right type. What is a suitable replacement for an AME 85 actuator? Where do the three pipes involved go to/come from? Danfoss HPA2 Motorised Valve head (2 port actuator) 39.99 Tax included. To support my channel click here: https://www.patreon.com/heatinggeeksInjector cleaning tool: http://rover.ebay.com/rover/1/710-53481-19255-0/1?icep_ff3=2\u0026pub=5575378759\u0026campid=5338273189\u0026customid=\u0026icep_item=333533584619\u0026ipn=psmain\u0026icep_vectorid=229508\u0026kwid=902099\u0026mtid=824\u0026kw=lg\u0026toolid=11111Or use a link from here :My tools:1) CARHARTT Tool Roll https://amzn.to/2yGiexO2) BAHCO Screwdriver with LED https://amzn.to/2Op5Ug12)BAHCO Screwdriver without LED https://amzn.to/2yEhLML3)WERA Kraftform Kompakt Screwdriver https://amzn.to/2OnOe4K4)WERA 0.8x4x100 Flat screwdriver https://amzn.to/2RNcpra5) KNIPEX Alligator https://amzn.to/2RNctqU5)KNIPEX Cobra https://amzn.to/2PA5YWYsame size as the alligator above just the cobra version6)BAHCO Spanner https://amzn.to/2IW3iR86)BAHCO Spanner with slimline jaw https://amzn.to/2yHCq2i7)CK Wire cutters https://amzn.to/2RP19dW 7)CK Wire cutters (shorter version) https://amzn.to/2OnJwnB8)KNIPEX bent long nose pliers https://amzn.to/2IW9uZ39)TESTO 510 Digital U gauge https://amzn.to/2Cfz36a9)TESTO Bluetooth U gauge https://amzn.to/2IW4t3010)Mirror tool https://amzn.to/2OpKVKl11)Cheap as chips pick set!!! checked wiring for u on honeywell and danfoss for u white, blue, green are correct orange gos to number 8 and gray to number 7 off the terminal strip presuming your cylinder stat is using a 3 wire switched and common set up. Sometimes if the system has low inhibitor the limescale can lead to the valve becoming stiff when operated, holding the switch closed when power removed, causing the heating to run on. Motorised valve not closing. If the motor is forced to draw too much current (in this case probably by excessive mechanical resistance in the valve mechanism) then the windings will overheat and are likely to eventually develop an open circuit failure. i have removed my broken danfoss 3 port valve as the ch was coming on with the hot water only, my problem is i have replaced this with a honywell 3 port . Whats Supporting This Troublesome Chimney? danfoss motorised valve problems. Tuzla) has carried out a major renovation of the citys comprehensive district heating network, providing reliability of supplies, improved comfort as well as energy and cost savings. Share. stream (New annually renewing membership only. Yet thanks to your tip if I hook the valve on OPEN the hot water starts fine. Thanks for your help. The speed of the actuators that are using synchronous motors is fixed on a frequency that is used in the supply 230V AC voltage. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. You could probably get away with replacing the synchro motor, if youd prefer to try that first. << /Lang (en-GB) /MarkInfo << /Marked true >> /Pages 74 0 R /StructTreeRoot 90 0 R /Type /Catalog /ViewerPreferences << /Direction /L2R >> >> Do you think this is ok? We and our partners use cookies to Store and/or access information on a device. Pipes are connected to the valve by two or more compression fittings. There is the 'T' to which Graham referred. The manual override works OK. We are currently experiencing problems starting configurator FC 102. Diagnosing sticking motorised heating valve. My central heating was running all the time, even when not in the timer.I removed the CH motorised switch first and checked the valve was free turning - a squirt of WD40 didn't go amiss anyways - before installing the new switch. The consent submitted will only be used for data processing originating from this website. An example of data being processed may be a unique identifier stored in a cookie. Danfoss Motorized Control Valves (MCV) for district heating and cooling, HVAC and central heating systems ensure stable and accurate control of water, glycol mixtures and steam. Danfoss Motorized Control Valves (MCV) for district heating and cooling, HVAC and central heating systems ensure stable and accurate control of water, glycol mixtures and steam. How to diagnose & repair a motorised heating valve. How does the safety function, or the so-called spring return function, work and what does SD and SU mean? The central heating comes on and then stays on as the valve sticks open. Select Danfoss Product Store You have arrived at the Danfoss Global Product Catalog. << /ArtBox [ 0 0 595.276 841.89 ] /BleedBox [ 0 0 595.276 841.89 ] /Contents [ 1429 0 R 1430 0 R 1431 0 R 1432 0 R 1433 0 R 1434 0 R 1435 0 R 1436 0 R ] /CropBox [ 0 0 595.276 841.89 ] /Group 1437 0 R /MediaBox [ 0 0 595.276 841.89 ] /Parent 74 0 R /PieceInfo << /InDesign << /DocumentID /LastModified /NumberOfPageItemsInPage 11 /NumberofPages 1 /OriginalDocumentID /PageItemUIDToLocationDataMap << /0 [ 277 8 3 -240.945 -342.992 -124.724 -325.597 1 0 0 1 -182.835 -302.517 ] /1 [ 1901 0 2 56.6929 -219.685 172.913 -202.29 1 0 0 1 114.803 -179.21 ] /10 [ 9809 10 3 -116.22 375.591 212.598 389.764 1 0 0 1 -94.9606 387.496 ] /2 [ 1928 1 2 184.252 -12.0472 369.921 193.701 1 0 0 1 277.087 -29.0149 ] /3 [ 1957 4 0 184.252 -219.685 369.921 -50.0733 1 0 0 1 396.892 -230.498 ] /4 [ 1963 2 0 382.677 -219.685 566.929 -23.3858 1 0 0 1 371.053 -264.175 ] /5 [ 1968 6 2 381.969 -12.0472 566.22 216.567 1 0 0 1 382.469 166.844 ] /6 [ 8051 7 2 56.6929 -301.575 439.37 -252.283 1 0 0 1 114.803 -261.1 ] /7 [ 8362 9 3 237.543 374.882 269.291 389.764 1 0 0 1 239.199 390.472 ] /8 [ 8599 3 4 394.724 -213.307 559.134 -15.6588 0.464752 0 0 0.464752 394.724 -213.307 ] /9 [ 8607 5 4 194.882 -219.685 364.494 -50.0733 0.398819 0 0 0.398819 194.882 -219.685 ] >> /PageTransformationMatrixList << /0 [ 1 0 0 1 0 -420.945 ] >> /PageUIDList << /0 159 >> /PageWidthList << /0 595.276 >> >> >> /Resources << /ExtGState << /GS0 1460 0 R /GS1 1461 0 R >> /Font << /T1_0 1462 0 R /T1_1 1463 0 R /T1_2 1438 0 R >> /ProcSet [ /PDF /Text /ImageC ] /XObject << /Fm0 1439 0 R /Fm1 1440 0 R /Im0 1441 0 R /Im1 1442 0 R >> >> /Rotate 0 /StructParents 0 /TrimBox [ 0 0 595.276 841.89 ] /Type /Page >> I have taken those motors apart to try and understand what is happening. I was excited to try out the manual override on my HW diverter to see if it got the boiler firing but no joy still. As above, not worth the effort for the cost IMO. Danfoss Tech Insider keeps you updated on a monthly basis with the latest news on cooling and industrial products portfolios from Danfoss Climate Solutions. My Boiler Wont Switch Off Danfoss Motorized Valve When the central heating system is switched on the danfoss motorised heating valve is opening the central heating water valve to allow the radiators to heat up, however when the central heating system switches off the danfoss motorised valve will shut off the water valve and stop circulation to the radiators as it should do but fails to send the signal to the boiler to shut down into standby mode, subsequently, the boiler and central heating water pump continue to run while not heating the radiators or hot water.Fitting a new danfoss motorised valve solved the problem.https://www.amazon.co.uk/Danfoss-HPA2-Actuator-4-Wire/dp/B003QZKN26/ref=pd_sbs_60_1?_encoding=UTF8\u0026pd_rd_i=B003QZKN26\u0026pd_rd_r=42ac493d-0c1e-11e9-9334-2994f224cbbe\u0026pd_rd_w=h0x4s\u0026pd_rd_wg=1lkQw\u0026pf_rd_p=18edf98b-139a-41ee-bb40-d725dd59d1d3\u0026pf_rd_r=3QB3CCSPH0R6KCBK5DMQ\u0026psc=1\u0026refRID=3QB3CCSPH0R6KCBK5DMQ If it's a new system and it has done this since installed, don't discount the possibility that it has been wired incorrectly. Motorised Valves At Toolstation, we stock premium motorised valves from trusted brands like Drayton, Honeywell Home and Corgi Controls. Yesterday, we noticed that our radiators were getting warm despite the heating being completely switched off; I assumed that the motorised valve had got stuck, so switched the power off and. The connection between the actuator and thermostat appear to be working normally as changes in the thermostat cause the indicator light on the actuator to go on or off. xc`````ab`c`A As others have said, this looks like an S-Plan system with the hot boiler/pump feed on the left, and then splitting into 2 circuits at the tee - with one valve for hot water and the other for central heating. Watched this video last night as yet another motorised valve failure which was leaving our heating running constantly rather than not turning on at all. No - the Danfoss is on the horizontal pipe (ignore vertica pipe behine. 1425 0 obj Troubleshoot and fix your Danfoss products to ensure smooth operations and high reliability. i\2c+RfQ%,X>}?`QG_ j Globe valves ensure stable and accurate control of water. Incidentally, the Drayton motor is a genuine Synchron and costs just over 18 incl. There are several reasons why a motorised valve might fail but usually, the fault will be with the actuator assembly. The family has noticed major interference on the TV when watching HiWe have a problem with the central heating. At the moment HW and CH are working as expected. It often happens that the power is out and the valve is therefore not under control anymore. endobj Have you actually replaced the valve head and body, or did you you change the actuator (powerhead)? When fully open, a switch inside the valve activates. Add to List. In future there will also be a AME 685 actuator which can be used.See the technical details for AMB 162/182 actuators: http://products.danfoss.com/productrange/list/heatingsolutions/control-valves/actuators-for-rotary-valves/amb-162-182-/#/, Most actuators do not work on AC and DC voltage because they have synchronous motors technology. Are you a trade or supplier? Weve always called plumbers out for these previously. However, the valve does not open or close no matter if demand is sent. %PDF-1.5 vat from Screwfix. Replacement actuators arent particuarly expansive at less than 30 but Im wondering if anyone has managed to strip and clean the actuator rather than replacing it. Or it could be an actuator fault, they are also replaceable but someone posted recently about a replacement which seemed not to be compatible. I can see the cover has a couple of screws - I guess that's the next step Well, it seems to me that they are on different pipes. Zone Valves, HSA3, Mid Position, SPST (interlinked) | Valve Actuators 3 Way | 3 Port Motorised Valves | Motorised Zone Valves | Climate Solutions for heating | Danfoss Global Product Store Due to an ERP system upgrade, all Drives configurators will be disabled from catalog from 25 February - 6 March 2023. Or best to replace the whole thing (which I can't do). Share. Why Hasnt This Simple Problem Been Fixed? Originally conceived before the 2023 UCI World Championships were POC Omne Lite and Ultra helmets, Pole Voima ID, Bell Full-10 helmet, Cane Creek ILG2 shocks, and Focus Jam/Sam 2s. All the AME actuators have the possibility to choose either voltage input signal from the controller (U) or current signal from the controller (I) on a DIP switch. Your email address will not be published. It was an expensive mistake that ended in tears. This is an intermittant fault. % All Rights Reserved. If I was you I'd change the motor first and if it turns out to be a valve fault, keep the new motor for spare. Based on thorough analysis and a long-term strategic approach, the 30 year old system is gradually transformed into a modern and smart energy system. stream If youd like to join in, please sign in or register. Cooling support for wholesalers and installers. I can reset it manually by moving the little metal tab back and forth a. My hot water motorised valve sounds like it stays open and the boiler Doesnt stop leaving the hot water scalding. Usually, actuators have linear characteristic, but with the new AME actuators like e.g. The body attached to the pipework or the bit stuck out on the side with the motor in it. Modulating, or AME actuators, are appropriate for precise regulation of the flow as they also have feedback signal and can position themselves very precisely in accordance to the signal from the controller. AMV actuators usually by default have no active return signal, unless there is a potentiometer used inside, and are not so precise when it comes to the flow control, but still offer a very good solution for customer requirements. Danfoss 2 port valve issue and replacement. This is an intermittant fault. The motorised valve appears to be constantly open. That's the right idea, although it could equally be the other way round, impossible to say from the picture. It may not display this or other websites correctly. You can create your listing free at DIYnot Local. Valve Actuators 3 Way; 087N6587. There are lots of clones about that are cheaper but for a few more pounds I think its worth replacing Synchron with Synchron (the original that I replaced has been controlling the flow to the central heating for more than 12 years so its done a lot of work). The 2-port motorised valve on the central heating isn't turning off once the room thermostat is satisfied and so the boiler continues to fire until I turn the boiler off at the mains. The valve wasnt stiff I easy turned by my fingers. Find links below to our Fitters Notes for refrigeration, support portals for Cooling and Industrial wholesalers and installers, as well as service videos for our Drives, Heating, High Pressure Pumps and Sensing Solutions product portfolios. Yes, an adapter is needed for this combination due to a different design of valve neck for the range DN 65-80. All logos and trade names are the property of their respective owners. You are using an out of date browser. There was a problem filtering reviews right now. MEV has a pressure gauge connection (at 33) for registering valve top pressure P3. 1426 0 obj You can input or calculate KV by entering the required flow and inlet/outlet pressure. For more information about this, please look in the data sheets. It often happens that the actuator has larger stroke than the valve. Danfoss Climate Solutions 08/2022 AI353237365414en-010102 1 Features The H-Series Motorised Valves, working in conjunction with time controls and thermostats, are used in domestic and commercial central heating, hot water and chilled water systems to control the flow of water in the system. That is, the two with the valves, and the one that feeds them. If a motorised valve is making a buzzing noise and not opening the central heating pipe is that likely to be just the actuator that's gone? :S~j{;ZCt'hPvel,]KbG&-Y'`q@td14'\rg\:p6RR2Bcm2O+{F48SM' For a better experience, please enable JavaScript in your browser before proceeding. If the stroke of the valve is shorter than stroke of the actuator, what do I do - how do I commission the actuator? 37 results for "danfoss motorised valve" RESULTS. Add to List. I have changed the head on a Honeywell valve twice and each time it works for about 10 minutes and then stops. If it moves when you tap it, then it sounds like the motor or valve is sticking. Manage Settings Just one point: you mentioned that those motors are brushless and therefore you dont understand why they burn out. This solution is, however, not recommended as you will not be able to know how much faster the actuator is actually moving.We recommend that you choose Danfoss AME actuators with BLDC motors technology as they have speed selection possibility on DIP switch. Motorised Control Valves Actuators for Globe Valves Accessories for actuators 065B2910 Export page Throttle valve HD impulstubes, for oil 065B2910 Throttle valve HD impulstubes, for oil Where to buy + Add to comparison list + Add to My Product List Product details Documents Product details EAN 5702421817261 Documents View: 10 25 50 1 / 13 One for zone 1, one for zone 2. Its Valliant boiler with a Megaflow tank. << /Filter /FlateDecode /Length 904 >> Please try again later . Danfoss motorised valves. Cannot be used in conjunction with other offers, or when switching memberships), Contact UsPrivacyForum RulesClassifieds RulesLink RemovalNewsletter SettingsAdvertising, Viewing 6 posts - 1 through 6 (of 6 total), Any Plumbers / Heating Engineers in? Please let us know if you like our Plumbing Basics and Tricks of the Trade videos. Anyway I have a question about your pipework that someone with gas experience might like to answer. Danfoss HP22 2-Port Motorised Zone Valve 22 mm 087N660900 59.82 each, Inc. VAT Collection Loading. Oct 20, 2011. There is also an additional option to choose that the actuator either will work from the 0(2)-10V or the 0(4)-20mA signal from the controller. See later post with picture, it's not two valves in series, it's an S plan. Might be worth replacing the complete motor/valve. Danfoss Head 2-Port Valve Actuator Part No: HPA2, 087N657900. << /Filter /FlateDecode /Length 788 >> The valve stays open by the continuous force of the motor so that would be the excessive current draw. Review of 9 Best Oscillating Tools, Impact Driver Showdown! Type: HPA2; No need to drain down the system - disconnect wiring and unscrew from valve body; Spring return lever for manual operation; 4 Wire; Manual Lever; For Use With Danfoss HPV22 & HPV28 Valve Bodies; Read more product details Filters (0 applied) Clear all You are using an out of date browser. I have a couple drain/vent questions regarding a bathroom. And a digital membership where you can read all the digital magazines is normally 25, and now 12.50 with the code. I've solved my wirquin sticking flush valve.There is a little bit of plastic Central heating playing up so I've been checking the valves. Result motor has burnt out. There are two soldered wire connections to be removed/replaced. It was on the blink and you could only con it into coming on by first turning on the hot water and What should I expect from a competent central heating engineer? Order the synchron motor from Amazon 13 same day delivery. Could the valve itself the brass 22mm be the problem? This could lead to catastrophic consequences for the application/industry and most importantly for the safety of everyone in the vicinity of the valve as it can have more than 130C of pressurised water in the system.The safety function enables you to close or open the valve automatically (via the spring inside the actuator) each and every time the power goes out. HiI have a problem with Center 2 Port Motorised Valve 22mm I dont know if is a problem with the head or valve I changed just head ( not valve ) for new one and I found this problem. But what does the Honeywell on the left do? In a series of videos, our technical expert Asif Dad answers our most frequently asked questions. 1424 0 obj Mine did the exact same thing and for the summer I removed the actuator from the top of the valve and used a pair of plyers to turn the top of the valve manually to the position that would only operate the hot water giving me the whole summer to resolve the problem. Great Savings & Free Delivery / Collection on many items . Get smart with Dad and handle your Danfoss heating products like a pro. You can find both versions in the Danfoss portfolio.See the range of actuators: http://products.danfoss.com/productrange/heatingsolutions/control-valves/actuators-for-seated-valves/#/. This kind of actuators, like AME 435 and AME 655/658/659, are able to work with AC or DC voltage but only for 24V in one or 230V in another version of the actuator, not both at the same time. Make safe the blue eg choc block. Damn right!!! The spring will close the valve and the internal switch will be off, so that the boiler is also off. We and our partners use cookies to Store and/or access information on a device. Main reason for doing this is that the current one is nicely terminated and the new one would just be bare wires that Id then need to terminate myself. Helped me solve a problem with my boiler constantly running. the base tends to get stiff causing the motor to burn out i would replace the full valve, With these actuators it's kind of a lightbulb syndrum you'll get one last for years and one that lasts 5 mins so you pays your money and takes your chance IMHO.Bob. H0yB0jvVzV N.464Eh%o_\XiPpW[_t)jOn$\_uqGM*4J",OghE~J5LXe?;B&gs c/h*B>,{Ft $g~!J%0L^%Qq#e2 >.|#:TSR=.bQux:}^jiF=9H^2}EVWIia,k!S=1"uVQY]2!Rte:%O~q,NS Bg=%fKCl hNT!B)8qtP%pyMaB :xN"w G3&$P>%~E[d>2eiLy]V#Biu>& 0'HMl3t;`MwcU54*;3 These can usually be replaced and that should be straightforward. But there is a tee in the 15mm to another appliance. MS Cinderella saves more than 1000 tpa marine diesel with new ventilation control, Solar heating plant reduces CO2 emissions by 15,700 tonnes annually, Heating facility reconstruction in Kopaonik mountain resort, Serbia, District energy as the heating and cooling solution in Teknopark Istanbul, Turkey, Renovation of a district heating network, Tuzla, Bosnia and Herzegovina, Let motorized intelligence solve your application challenges. They also offer a range of different functions and features to suit each specific application. << /Linearized 1 /L 714841 /H [ 1026 350 ] /O 1428 /E 386035 /N 4 /T 706025 >> Select the supplier or trade you require, enter your location to begin your search. When power is applied, the internal motor opens the valve allowing water to flow. Discuss Danfoss 3 port valve wiring in the Central Heating Forum area at PlumbersForums.net, Reply to Danfoss 3 port valve wiring in the Central Heating Forum area at PlumbersForums.net, Welcome to PlumbersForums.net - The international free. First venting. HeatingGeek 19.8K subscribers Subscribe 350 21K views 3 years ago This is just a quick video showing a Danfoss 2 port valve issue being traced. Checked thermostats too. Find technical support or troubleshoot AC drives with our chatbot. A Redevelopment Update, NBD: Last Tarvo 2, Specialized Tero X, Crankbros Mallet Trail, This topic has 5 replies, 5 voices, and was last updated. The topic Any Plumbers / Heating Engineers in? The central heating comes on and then stays on as the valve sticks open. endobj In a heating system there's practically no maintanence you can do to that unit, it is probably gunked up. - it's not conncted to the valve), and to its left there's a T to the Honeywell. It's been mixed up week here at STW Towers, mostly thanks to everyone suddenly realising they haven't used up their annual leave so they'd better take some time off. Your email address will not be published. This in turn improves temperature control and reliability while increasing the energy efficiency of the system. or if you are doing it yourself you can find suppliers local to you. Electrician Talk | ElectriciansForums.net. The answer is YES. Grimbaldus, Oct 9, 2017 #15 You can increase the speed of the actuator, if you use a 60Hz supply voltage. Danfoss 2 Port Valve Actuator ; . Here are some of the highlights: Easy selection, installation, commissioning and maintenance mean less time, money and effort, Excellent control performance, even in the most demanding systems. You must log in or register to reply here. An example of data being processed may be a unique identifier stored in a cookie. Great vid. My central heating system has an electric valve in it, which controlswhether the My wife has been stuffing stuff under the stairs where the hot water tank and How can I tell whether the motorised valve on the hot water circuit isworking Hello everyoneI'm having a problem with a motorised valve which is buzzing HiThe motorised valve on my central heating has packed up.It is a Danfoss 3 way What is the best treatment for "salt damp" caused by hygroscopic salts on a HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. Is this the valve that needs replacing of is it the stat or both! They do get quite warm but shouldn't get hot except when the pipe is hot. Changed timer setting to reduce hours..horstmann motorised vale stopped plumber did contact test and said valve burnt out.fitted new one which same result after two days.ok using manual override on valve but nothing when set to timed!in view of two valve failing so quickly , is it possible its the thermostat? In Europe, 30 percent of all energy consumption goes to heat or cool buildings. An honest admission, so lll explain. The microswitch in the Danfoss HPA2 often fails, but it can be bought separately and takes 10 minutes to replace. Reply Roger Bisby The 2 or 3 I've replaced have always worked fine with a new motor fitted but they were Honeywell not Danfoss. DIY plumbing repair of a How to diagnose & repair a motorised heating valve. Danfoss motorized control valve body vrb3 065Z0213 dn15 1/2" plant . Danfoss Manifolds & Valves for sale | eBay Danfoss Manifolds & Valves Best Selling Danfoss Pilot Style 27 Electrical Displacement Control $1,126.13 New Danfoss 157B4116 PVEM 12V Hydraulic Valve (5) $620.00 New Danfoss 013u3017 Linear 3-way Mixing Valve 1/2" NPT KVS 1.5 $42.99 New Danfoss 157B3171 Proportional Valve Pvm32 (1) $84.99 New #1. i have removed my broken danfoss 3 port valve as the ch was coming on with the hot water only, my problem is i have replaced this with a honywell 3 port . Home; About; Services; Ministries; Contact Us; saltwater reels academy Can You? You could dismantle the valve and solder a new switch in, but having done it once I wont do it again. Budget about an hour of your time, a fir amount of faff with springs and screws complete with no guarantee that itll fix the problem (as the motor wears the spring loses the ability to wind the valve closed too). Required fields are marked *. Do I need to use an adapter for the combination of VF 2/3 DN65-80 and AMV(E) 56? It's a Danfoss valve - is it straightforward to replace the actuator? 808786 Drayton ZA6/779-2 2-Port Motorised Zone Valve 28 mm 27205 99.98 each, Inc. VAT Ive got a sticking Danfoss control valve. The programmer makes a nice click and is working but on hot water the boiler doesnt come on. It's easier (but more expensive) to swap the whole head. I can just replace the actuator, no plumbing required, just need to wire up the new one. Two 2 port valves plumbed "in series" seems very odd. Start point - actuator is pointing almost fully to HW, but not quite - say 85deg out of 90. step 1 - turn up room stat - no response on anything. Very helpful video. will have a good look. First, isolate all electrical power from the central heating system controls. Sounds more like the heating zone valve isnt shutting off. In the first case I was able to bend the microswitch actuating lever to make sure the switch was getting pressed, in the second case the brass gears werent good so I replaced the complete power head (again excluding the valve so no need to drain the system). Recently we had reason to replace our boiler. 16 inch round wall mirror; custom made wood furniture; tsa approved toiletry bag : target; Just pop the old one off and put the new one on. You first need to understand a bit about how your system works - then it becomes Hi guys My FIL has noticed two port motorised valves on BES web site. Delivery Loading. An electric motor does not require brushes in order to burn out. No brushes involved! lV(+|9vy?_dZel$xREVozo} 5gula3+ ```M`Pp#?'-gQa\ # :58;x8Cd&3201;]`Ma`; rq)9&)YX>T1wgp| '^ The actuator doesn't provide all that much torque so even if you can move the valve with the manual lever, the actuator may not be able to move it if it is stiff. A degunk would keep it going for a bit (unless the actuator has actually burnt itself out which is entirely likely after getting gunked up) but it would get stuck again. Thanks for the very informative video. Shimano SPD Cleats SH51 MTB SPD - Single Release, Fresh Goods Friday 642 Cake For Me, Corned Beef For You, Whats Open At Glentress?