That's probably on the primary feed to the hotwater tank. endstream All of which adds up to enhanced comfort for the end-user. Is it still likely a diverter problem? Electrician Talk | ElectriciansForums.net. will have a good look. This is an intermittant fault. Looks like standard S-plan to me. Just pop the old one off and put the new one on. danfoss motorised valve problems. Since 2011, the local District Heating Company (Centralno grijanje d.d. Before taking a look at this, last night the motorised valve has started clicking every few seconds, but only when HW and CH are both selected. Sadly my experience is Danfoss valces do not use good switches and I have replaced several which can be a fiddly job. 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). Very helpful video. The 2 or 3 I've replaced have always worked fine with a new motor fitted but they were Honeywell not Danfoss. JavaScript is disabled. Great Savings & Free Delivery / Collection on many items . There seems to be a problem completing the request at present. Diagnosing sticking motorised heating valve. endobj Danfoss Heat Selector is the best-in-class online selection tool that optimizes planning process for heating application experts. Troubleshoot and fix your Danfoss products to ensure smooth operations and high reliability. Probably just the actuator. See also The family has noticed major interference on the TV when watching HiWe have a problem with the central heating. I've got a sticking Danfoss control valve. Is this the valve that needs replacing of is it the stat or both! Your online portal for Danfoss sales and technical support for wholesalers and installers within Refrigeration and Air Conditioning industries and applications. There is the 'T' to which Graham referred. Thanks for your help. https://amzn.to/2OpK10o12)FLUKE alert volt stick https://amzn.to/2PxCYPF13)MONUMENT Tailing Spanner https://amzn.to/2OrypK814)Tee Bar 4mm https://amzn.to/2yDPRAr15)Tee bar 2mm https://amzn.to/2yzbjGA16)Tee bar 2.5mm https://amzn.to/2OqqSvd17)Full Tee bar set https://amzn.to/2yAoIyk18)10mm ratchet spanner (flex head) https://amzn.to/2IWCoZ919)8mm ratchet spanner (flex head) https://amzn.to/2IUDZP520)14mm/15mm spanner https://amzn.to/2Aa6wgZ21)BAHCO small spanner https://amzn.to/2RRkKKH22)Cheap Lock knife https://amzn.to/2IWatZf23)Sharpie https://amzn.to/2IVrxPk24)Injector cleaning pins link coming soon. 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 Great vid. 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? 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 issues with my heating systems and find it all very confusing. 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. 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. Oct 20, 2011 - Order your Danfoss HSA3 3 Port Valve Actuator from Direct Heating Supplies today for great prices and efficient service. Add to List. Could the valve itself the brass 22mm be the problem? Home; About; Services; Ministries; Contact Us; saltwater reels academy Frequently asked questions for heating customers, VACON 100 Commissioning with VACON Live, How does an EV225B, Servo-operated 2/2-way solenoid valve for steam work. endstream View online (16 pages) or download PDF (2 MB) Danfoss Motorised valve, type MRV Datasheet Motorised valve, type MRV PDF manual download and more Danfoss online manuals Quantity Add to Cart 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 And a digital membership where you can read all the digital magazines is normally 25, and now 12.50 with the code. If it's a new system and it has done this since installed, don't discount the possibility that it has been wired incorrectly. The central heating comes on and then stays on as the valve sticks open. No plumbing required. Of course I didn't so come winter I put the actuator back on and it's been working fine ever since! We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Actuators provide risk reduction through improved overload protection, which ensures a trouble free operation of the actuator inside the system. To be honest, the price difference is not that much. But what does the Honeywell on the left do? The consent submitted will only be used for data processing originating from this website. Support Made Easy is an online portal developed to help wholesalers, retailers and installers to fulfil their needs quick and easy. The vertical ?22mm pipe on the left is a return to the boiler, leaving the ?15mm pipe running behind the Danfoss unaccounted for. Danfoss Motorized Valve - YouTube 0:00 / 6:14 My Boiler Wont Switch Off. To answer the first question, it is *possibly* a stripped gear on the motor. It's easier (but more expensive) to swap the whole head. 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. Danfoss 2 port valve issue and replacement. My heating is working. 2023 Hearst UK is the trading name of the National Magazine Company Ltd, 30 Panton Street, Leicester Square, London, SW1Y 4AJ. danfoss motorised valve problemstiffany style pendant shade Menu tricycle for seniors with disabilities. 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 . Valve Actuators 3 Way; 087N6587. Sounds more like the heating zone valve isnt shutting off. The topic Any Plumbers / Heating Engineers in? 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. There are two soldered wire connections to be removed/replaced. No - the Danfoss is on the horizontal pipe (ignore vertica pipe behine. Had a couple of these in the past. It supplies 18-20% of the annual heat consumption in the city of Silkeborg, Denmark, which has an ambitious target of CO2 neutrality in heat production by the year 2030. The valve was stuck in the open position but your vid gave me the insight to take the valve apart and see what was going on. 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. It can be obtained from RS Components (Part No. In a heating system there's practically no maintanence you can do to that unit, it is probably gunked up. 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 The actuator remembers these positions itself and adapts its stroke to the valve. Im assuming that the third valve is for the hot water? thanks - very helpful. An example of data being processed may be a unique identifier stored in a cookie. The worlds largest solar heating plant in Silkeborg, Denmark harnesses energy to heat the homes and workplaces of 40,000 citizens. There was a problem filtering reviews right now. If it moves when you tap it, then it sounds like the motor or valve is sticking. I am going to look up Synchron and see if I can understand. Globe valves ensure stable and accurate control of water. 1424 0 obj They also offer a range of different functions and features to suit each specific application. 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. The Print+ membership where Singletrack magazine drops through your door, plus full digital access, is normally 45, now only 22.50 with the code. endobj The speed of the actuators that are using synchronous motors is fixed on a frequency that is used in the supply 230V AC voltage. When fully open, a switch inside the valve activates. 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. Two 2 port valves plumbed "in series" seems very odd. Can You? After googling the fault it seems that the actuator can be replaced without removing the valve. 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. If youd like to join in, please sign in or register. 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. It's a Danfoss valve - is it straightforward to replace the actuator? and the wiring is slightly different , on the danfoss it has 4 wires ,,grey, blue,orange and (brown and white combined) on the honeywell it has 5 wires ,, grey,blue,orange . Danfoss Head 2-Port Valve Actuator Part No: HPA2, 087N657900. 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 Blueprint for Truly Affordable Homes Could Slash 1.2 Million Council Waiting Lists, UK Set for Building Boom as 20,500 Planning Applications Approved per Month, New College Durham Launches Retrofit Course to Tackle Green Skills Gap, Multi Tool Showdown! Continue with Recommended Cookies, Search the forum using the power of Google. 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. One for zone 1, one for zone 2. Increased reliability and operational safety due to built-in thermic and overload protection of the electromotor. Yet thanks to your tip if I hook the valve on OPEN the hot water starts fine. . 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? The valve stays open by the continuous force of the motor so that would be the excessive current draw. The Glentress Masterplan sets out redevelopment proposals that includes new trails, improved facilities, and some new accommodation options in the area. Danfoss HP22 2-Port Motorised Zone Valve 22 mm 087N660900 59.82 each, Inc. VAT Collection Loading. Replacing a failed Synchron motor in a Honeywell motorised valve is quite straightforward, assuming you know how to work with mains electricity safely. 1428 0 obj Shimano SPD Cleats SH51 MTB SPD - Single Release, Fresh Goods Friday 642 Cake For Me, Corned Beef For You, Whats Open At Glentress? You can input or calculate KV by entering the required flow and inlet/outlet pressure. Also, I see our system has two motorised valves in series - a Honeywell and the Danfoss - what does the Honeywell do? Interesting video. step 3 - turn down room stat - boiler shuts down. Excludes Gift Memberships, Discount applies to first year. step 2 - start moving manual lever on actuator - boiler fires up, actuator continues moving on it's own to CH position. You are here. I'm assuming that the ?22mm pipe coming in from the left, the middle one of the three, is the feed from the boiler, which is then split two ways, down through the grey Honeywell to the DHW tank, which opens when the tank thermostat calls for heat, and horizontally through the white Danfoss to the CH system, which opens when the house thermostat calls for heat. What is the difference between AMV and AME actuators? At the moment HW and CH are working as expected. You could probably get away with replacing the synchro motor, if youd prefer to try that first. It's a Danfoss valve - is it straightforward to replace the actuator? xcbd`g`b``8 "@$0"9A$r L.l"`r.474LI6 "El"`[Z1dQ A6[mdV"H1 ;*Y XjV^TE"*Sf8L: Anyway, I would really appreciate any new ideas as to what is wrong with my system. Manage Settings I have right or not?) Wouldn't that tee have been better placed in the 22mm section? 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. Please try again later . Or it could be an actuator fault, they are also replaceable but someone posted recently about a replacement which seemed not to be compatible. Cooling support for wholesalers and installers.  k"endstream Helped me solve a problem with my boiler constantly running. #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 . To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Do I need to use an adapter for the combination of VF 2/3 DN65-80 and AMV(E) 56? :S~j{;ZCt'hPvel,]KbG&-Y'`q@td14'\rg\:p6RR2Bcm2O+{F48SM' endobj When power is applied, the internal motor opens the valve allowing water to flow. Why Hasnt This Simple Problem Been Fixed? AMV means that the actuator is either 2-point or 3-point controlled, AME means that the actuator has modulating control. 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. It may not display this or other websites correctly. << /Filter /FlateDecode /Length 904 >> 4 Roofers Couldnt Solve This Damp Chimney. I had an engineer out today to quote me for a boiler install. Yellow switch that goes to w I have to tap the valve for it to close and stop the signal to the boiler. Troubleshoot and fix your Danfoss products to ensure smooth operations and high reliability. (New annually renewing membership only. 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. You are using an out of date browser. We are currently experiencing problems starting configurator FC 102. AUX switches are additional switches in the actuator that send signals to the recipient (can be other actuator, boiler, pump or controller) when the certain point of the actuator position is passed, this usually means when actuator end positions are reached (totally open or closed). 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. It may not display this or other websites correctly. What is a suitable replacement for an AME 85 actuator? 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. Read more The central heating comes on and then stays on as the valve sticks open. stream Required fields are marked *. 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. 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? You could dismantle the valve and solder a new switch in, but having done it once I wont do it again. Buzzing sound from motorised valve since heatmiser install diynot forums danfoss randell type hsa3 s plan central heating system y randall h series valves paddle bhl co uk shoe wc4 b wiring centre guide manualzz 3 port cannot have ch on by itself how does an work boiler boffin actuators for modulating control ame 110 nl com electric drive 435 ab Replacement actuator for 2 port motorised valves. The motorised valve appears to be constantly open. Regards, Chris (electrical engineer MIEE, ret'd). 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. If the stroke of the valve is shorter than stroke of the actuator, what do I do - how do I commission the actuator? Danfoss motorized control valve body vrb3 065Z0213 dn15 1/2" plant . In this video, Roger shows you how a motorized valve works and what you need to do to diagnose and repair a motorised valve and avoid buying a costly replacement. Now new BLDC motors are coming and this technology can work on AC or DC actuators due to the so-called serial connection between stator and rotor of the electric motor. MEV has a pressure gauge connection (at 33) for registering valve top pressure P3. << /Filter /FlateDecode /S 119 /Length 268 >> No brushes involved! My 3 port mid position valve bangs when just calling for hot water but fine when just calling for central heating or both. %PDF-1.5 Danfoss 2 Port Valve Actuator ; . We are rapidly working on a solution and apologize for the inconvenience! It often happens that the power is out and the valve is therefore not under control anymore. Our range consists of both 22mm and 28mm diameters and 2 and 3 ports. Do you think this is ok? You can create your listing free at DIYnot Local. To check which actuators have selectable speed, please contact our sales organization. If you need to find a tradesperson to get your job done, please try our local search below, If the same model is available, just change the head so you dont need to drain the system and do any plumbing. I have a couple drain/vent questions regarding a bathroom. To close the valve, power is removed. Delivery Loading. When I turn Im guessing red live that goes to com I always like to try myself before calling a pro (within reason of course) at least to ensure its not something basic. Followed the simple instructions and bingo everything working. 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. Incidentally, the Drayton motor is a genuine Synchron and costs just over 18 incl. It often happens that the actuator has larger stroke than the valve. Motorised valve not closing. Pipes are connected to the valve by two or more compression fittings. 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. How does the safety function, or the so-called spring return function, work and what does SD and SU mean? The programmer makes a nice click and is working but on hot water the boiler doesnt come on. As above, not worth the effort for the cost IMO. That would indicate a standard S plan probebly. #1 tgs New Member Which bit of the valve? xc`````ab`c`A The little bar is permanently stiff/closed. In Europe, 30 percent of all energy consumption goes to heat or cool buildings. That is, the two with the valves, and the one that feeds them. endobj stream 8 Top Impact Drivers Reviewed, Building an extension Part 6 Installing joists and steels, New DeWalt Cordless Router Compact 18v XR Brushless DCW604, Cordless Dust Extraction with DeWalt DCV586M, Fein releases latest review: FEIN Cordless MultiMaster, Festool ISC 240 Cutting Insulation Like a Dream, Why Am I Making My Door Linings? It isnt a difficult job it took me (a DIYer) half an hour and most of that was removing the previous crimping and stripping the wires on the new Synchron motor, having clipped off the redundant connectors that came with it. 1426 0 obj Grimbaldus, Oct 9, 2017 #15 Certainly whipping off the actuator for a look, and seeing if the valve spindle moves is a good first start. 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. H"Gq$K&Gdn4H2b#hCZ-E|dd/O>??d+-ekhit=6(Cv?Za[~PX"-V#yE]i-2Mvy;E~ TUgir 8/+v>-N9J=*4DX,c;M*L>u-u|_TV+s-Z:_kSB!;@pwxg[rrn. << /Type /XRef /Length 162 /Filter /FlateDecode /DecodeParms << /Columns 5 /Predictor 12 >> /W [ 1 3 1 ] /Index [ 1424 48 ] /Root 1426 0 R /Size 1472 /Prev 706026 /ID [<8e9b3e1c3bccac4abccca087a7b12fbe>] >> How to diagnose & repair a motorised heating valve. What I dont fully grasp is why some motors are happy to do that for 20 years while others fail. Your email address will not be published. I can reset it manually by moving the little metal tab back and forth a. To answer the original question, you should be able to separate the actuator from the wet part of the valve by removing a couple of screws which are probably under the cover. 1425 0 obj This is just a quick video showing a Danfoss 2 port valve issue being traced and the valve being replaced. Use code HELLO54 when you join us as a print or digital member and your membership will be half price for the first year. The new Valve Ruler App from Danfoss, available for smart phone or tablet, allows you to select and connect valve types and actuators for the application at hand. Order the synchron motor from Amazon 13 same day delivery. 809479 Danfoss HS3 3-Port Motorised Mid Position Valve 22 mm 087N661300 73.22 each, Inc. VAT Collection Loading. For example AME 655/658/659 actuators can move at either 2 s/mm or 6 s/mm, depending on the setting on the DIP switch. Danfoss has the solution to lower energy usage and improve indoor climate by adding a digital element: Leanheat software. They are designed and built for long term Whether you're installing a new central heating system or need a replacement valve, we've got plenty of products available in various sizes and configurations. This is the motor section mounted on top of the valve. The valve itself is operated by the thermostat and is made out of brass. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Roger Bisby is an English television presenter and journalist, known for his expertise in the British building industry. 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. 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. 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. Share. 808786 Drayton ZA6/779-2 2-Port Motorised Zone Valve 28 mm 27205 99.98 each, Inc. VAT An example of data being processed may be a unique identifier stored in a cookie. The valve wasnt stiff I easy turned by my fingers. Checked thermostats too. stupid question but the sider on the side of the 3 port is in the auto possision and not in manual or bent ? Motorised Valve Faults - Actuator and Valve. Its Valliant boiler with a Megaflow tank. What can be done, if it doesn't work? Or best to replace the whole thing (which I can't do.) Oct 20, 2011. Continue with Recommended Cookies. An honest admission, so lll explain. I have tried the manual override but that does not close the valve. - it's not conncted to the valve), and to its left there's a T to the Honeywell. 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). This is an intermittant fault. Review to follow.25)Rothenberger 18 heavy duty pipe wrench https://amzn.to/2ChkRd6These are the heat duty ones I use.26)Knipex (large) https://amzn.to/2OrgfIm27)BAHCO 12 (not wide jaw) https://amzn.to/2Aatuob28)Fluke 115 multimeter https://amzn.to/2OqaFpFDrain down hose https://amzn.to/2RM4ZENGas Tap Grease https://amzn.to/2SE0jRL Led lights for van. Danfoss Hp22b 2 Port Motorised Valve With Actuator 22mm 087n6642 At H P W I Have A Problem Where The Hw Only Works When Ch Is On Boiler Fires But Pump Does Not Come And Then Bem 5000 Bhl Co Uk Installation Instructions One Large Zone In a range of on - off motorised zone valves Danfoss offers AMZ 112/113 actuators. If you have DC voltage in the system and have an AC actuator, we recommend to look for a suitable replacement or install an inverter in your system.See the technical details for AME 435 actuators: http://products.danfoss.com/productrange/list/heatingsolutions/control-valves/actuators-for-seated-valves/actuators-for-heating-cooling-/actuators-without-safety-function/amve-435/#/. Hi Roger! Are you sure the pipe joining them together dosn't have a tee taking a feed from the boiler flow? The consent submitted will only be used for data processing originating from this website. Danfoss Motorized Valve Alan Howatt 38.5K subscribers Subscribe 449 Share 46K views 4 years ago My Boiler Wont. 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. But there is a tee in the 15mm to another appliance. Where do the three pipes involved go to/come from? Find technical support or troubleshoot AC drives with our chatbot. Result motor has burnt out. Can actuators be driven by voltage or current signal? It was an expensive mistake that ended in tears. The motorised valve is used to control whether hot water from the boiler flows through the radiators or through the cylinder coil. The spring will close the valve and the internal switch will be off, so that the boiler is also off. If your company is an existing Danfoss Power Solutions partner, please contact your Account or Customer Service Representative to access DigitalTools. For a better experience, please enable JavaScript in your browser before proceeding. 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. 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. Review of 9 Best Oscillating Tools, Impact Driver Showdown! Solving motorised valve problems: In this video, Roger explains how a motorised valve works and discusses how you can easily diagnose and repair a motorised valve, avoiding the need to buy a costly replacement. 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. The synchronous motors do conk out a lot but they are easy to change.