(Remember, the orange wire can also get 230V from the cylinder stat if it is calling and a hot water program is on.). If the actuator cover does not have a raised pip on the top (a reversed dimple), do not remove the actuator or you'll get a flood. If the hot water valve is partially open, you may not run out of hot water. Honeywell, V4073A1039, 22mm 240V (HE0055) Bristol Stock: More than 5. Everything worked normally with the hot water now operating correctly on its own again. The orange wire then sends a signal to operate the boiler and pump. Water enters via port AB. All four of these valves have an auxiliary switch. These are all synchronous motors (synchronous is a generic term for a type of electric motor). The Honeywell V4073A motorised valve rests in the hot water only position (the heating port, A, is closed) when the valve is de-energised. This page is copyright but if you want to link directly to it from your own web site the hyperlink is: http://www.lovekin.net/honeywell-motorised-valve-faults.html. 3 Port 22mm or 28mm Motorised Zone Valve Head Can Replace Honeywell V4073A1039 V4073A1054 V4073A1088 V4073A1062 4.3 out of 5 stars 218 #1 Best Seller in Bathtub & Shower Diverter Valves Where this happens it is usually with the valve jammed open. Using a multimeter set to 750V AC we checked for 230V between the valve white wire and valve blue wire (in the local junction box) and found 230V present so we suspected the valve motor. Trustpilot. If the valve spindle seizes up with the valve open, the switch remains permanently closed. The auxiliary circuit could be set to work at a lower voltage than mains but it is normally carrying mains voltage. If you do this, you must use very little force as it is very easy to shear a spindle or damage the valve internally. The Normal state of a valve is the de-energised state. Remember, it only ever moves through about 70� for 2 port Honeywell valves and only about 45� for 3 port Honeywell valves so don't force it! With earlier valves, the cover was completely free. These 22mm valves (3-port V4073A1039 and 2-port V4043H1056) are used in smaller and medium sized properties. The other wire, usually the orange, is connected to the Switched Live feed to the boiler. This is called closing the switch. Honeywell V4043H1056 22mm 2-port zone valves have five wires: green/yellow is Earth, blue is Neutral, brown is Live (or Line) to the motor, grey and orange are connected to the end switch and form part of a separate circuit. The powerhead contains the motor, which is used to drive the valve open, and an auxiliary switch or end switch. Ive got a Y-plan fully-pumped central heating system, but when the controller calls for CH, the synchron motor (in the Honeywell V4073A mid position valve) is not moving the valve round (and hence the boiler is not firing). These crimps can sometimes be re-opened by using pliers to squeeze together the edges of the flattened tube. Repeatedly operating the manual lever for the full length of the slot may temporarily resolve this. It should also have left you with two wires still connected to the powerhead. There’s a section below about the British Gas BGMVSP-2 two port valve. The same thing can occasionally happen if the end switch arcs, welding the contacts together. It's a fully pumped system with a Y plan configuration using a Honeywell V4073A motorised mid postion valve. In Honeywell V4073A 3-port valves it turns through about 45Âº (about 7Â½minutes on a clock face). Can be replaced without draining down. The thermostat is also working O.K. If it does, the valve may work normally once the powerhead has been replaced. It is also sometimes called the Normal state. The manual lever on the 2-port valve tells us less. If you click the link it will open in a new tab or new window so you access both articles. Itâs a quick and easy way of fixing the passing valve. Other similar valves are the Siemens CZV222 two-port, 5 wire valve and the Flomasta 27900SX two-port valve. As far a we know, Honeywell motorised valves which were made from 1985, and which carry the raised pip (small bump) on the top of the metal cover, allow the powerhead to be removed without draining down (see above). This system had 2 Honeywell V4043H two-port motorised zone valves, one controlling the radiator circuit and one controlling the hot water circuit. 3 Port 22mm or 28mm Motorised Zone Valve Head Can Replace Honeywell V4073A1039 V4073A1054 V4073A1088 V4073A1062 4.3 out of 5 stars 218 £28.25 £ 28 . Since the boiler worked OK for hot water we looked at the programmer to check that it was set to call for heating and checked that the room thermostat was set high enough to be calling for heat. The other motor flange must line up so that the single securing screw can be re-fitted and tightened. The motor must then be wriggled back into place so that one of the motor flanges slides back below the angled metal tab on the powerhead. If the cylinder stat is calling for heat it sends the signal on to the zone valve controlling the hot water circuit and this drives the valve open. The valve wonât be driven open and the end switch will not be made (connected) so power will not be sent on to the boiler or pump. When the valve is fully open, the end switch closes, allowing electrical current to pass from the grey wire to the orange wire and from there to the boiler Switched Live. On the other side of the motor there is another flange which is located below a metal tab. The Honeywell �" BSP Female zone valve (V4043C1156) does not have an auxiliary switch. 2, Will I have any problems with the wiring (not physically, but connecting 2 x 2 port valves to the 5 wires going to the boiler) Even though one valve only partly opens itself and is unable to fire the boiler, the valve on the other circuit can open fully and fire the boiler. ACL Drayton motorised valves are very similar in operation, as are Iflo and British Gas valves which appear to be badged Drayton valves. When the valve is driven fully open, the end switch inside the actuator closes (connects), completing the circuit between the grey and orange wires. This valve will then not be able to tell the boiler to fire. Boiler fired up when there was no demand from the programmer, sometimes in the middle of the night. When Heating is also called for, the white wire is energised and the valve will motor to, and stop in, a mid-position. Unless the valve is very old (more than 20 years), the actuator (power head) should be able to be safely removed from the valve. Most Synchron motors have orange wires. Iflo motorised valves and British Gas motorised valves have similar faults. The wires should go round the motor, not across the top of it. Replacing a failed Synchron motor in a Honeywell motorised valve is quite straightforward, assuming you know how to work with mains electricity safely. Most of the clones cost about half the cost of a genuine SYNCHRON motor. V4044C1288 is a 22mm compression, diverter valve feeding one port at a time onlyV4044C1569 is a 28mm compression diverter valve feeding one port at a time onlyV4044C1098 is a 3/4â³ BSP Female diverter valve feeding one port at a time onlyV4044C1494 is a 1â³ BSP Female diverter valve feeding one port at a time only. The V4073A 3-port valve never closes water flow through the valve completely. The most common by far are the 22mm 3-port, 5-wire, mid-position valve and the 22mm 2-port, 5-wire, zone valve. View the Honeywell 3 Way Valve Manual for free. The valve body is the brass casting which is bolted into the pipework. Even if the valve is not stuck open the switch contacts can occasionally be found to have welded together (caused by the spark arcing across the switch contacts). These are all small angles! The valve needs to be changed and it should sort the problem out. With hot water selected on the programmer, and the cylinder thermostat calling for heat, we checked the lever and it was loose across the whole travel of the slot but the boiler didn't fire. If, for example, the heating valve is failing in this way, you will get heat round the radiators while the cylinder hot water is being heated too. This got rid of the immediate problem showing that this valve was causing the problem. Description: Electrical Installation pertaining to Honeywell 3 Port Valve Wiring Diagram, image size 800 X 718 px, and to view image details please click the image.. Unscrew both of these screws. A full range of Motorised Valves from Honeywell suitable for all central heating systems. If no bypass is fitted the boiler may kettle violently, with loud bumping and banging noises as the heat can’t be dissipated, and it may to go overheat lockout. With modern boilers, the boiler sends a Live feed to the circulating pump which then pumps heated boiler water through the valve. We use a small adjustable spanner across the flats on the valve spindle. Please let us know if you like our Plumbing Basics and Tricks of the Trade videos. Weâre happy for you to make individual copies of this article but please donât copy the whole article or parts of it onto your own website; link to the article instead. The Honeywell V4073A 3-port valve has five wires. Slide the blunt end of the motor sideways until the flange comes out from the tab holding it down. Honeywell designed the valve so that the ball turns slightly on its spindle each time it sits down. It may also apply to the Tower VAL222MV motorised valve, the Siemens CZV222 motorised valve and the Flomasta 27900SX motorised valve. To test correctly, at least one of the two motor wires must be disconnected from the heating wiring circuit. Where two 2-port motorised valves are fitted (one for the heating circuit and one for the hot water cylinder circuit) the fault may be disguised. The photos show how much insulation to remove. Tonight, I think I have narrowed it down to the Honeywell V4043H motorised valve. If the reading is many times higher than that, or it is open circuit, the motor has failed. We tried in the past and, in our experience, they fail really quickly. These look identical but, instead of the name SYNCHRON, they use the word Synchronous. The inlet port AB can never be closed; the ball only moves between port A and port B. It may be possible to temporarily sort it out by freeing the spindle but it won't last indefinitely before it seizes up again. Since the grey is permanently live, the orange becomes live and power goes to the boiler (and pump). All the zone valves would open and close together, defeating the purpose of separate zones. Honeywell make a large range of motorised valves used in domestic central heating systems. This is the state either when all the power is off or when Hot Water Only is selected. Motorised valves are often fitted in tight spaces with limited visibility so note the orientation of the powerhead. These items facilitate repair of the valve without the need to drain the system or replace the complete valve. The explanation that follows assumes the valve is connected to the pipework in that way. However, if hot water was satisfied and heating was the last thing calling, the valve can remain partially energised with the heating port open. The motor can, if necessary, be removed without disconnecting the powerhead from the valve body. V4073A1039 is a 3 port, 22mm compression, 5-wire, mid-position diverter valveV4073A1088 is a 3 port, 28mm compression, 5-wire, mid-position diverter valveV4073A1054 is a 3 port, Â¾â BSP Female threaded, 5-wire, mid-position diverter valveV4073A1062 is a 3 port, 1â BSP Female threaded, 5-wire, mid-position diverter valve, V4043H1056 is a 2 port, 22mm compression, 5-wire, normally-closed zone valve with an auxiliary end switchV4043H1106 is a 2 port, 28mm compression, 6-wire, normally-closed zone valve with an auxiliary end switchV4043H1007 is a 2 port, Â¾â BSP Female threaded, 5-wire, normally-closed zone valve with an auxiliary end switchV4043H1080 is a 2 port, 1â BSP Female threaded, 6-wire, normally-closed zone valve with an auxiliary end switch, V4043C1156 is a 2 port, Â½â BSP Female threaded, 3-wire, normally-closed zone valve but has no end switchV4043B1257 is a 2 port, 22mm compression, normally-open zone valve, no manual lever, no end switchV4043B1265 is a 2 port, 28mm compression, normally-open zone valve, no manual lever, no end switch. These valves fail-safe in the open position in the event of a power failure or valve motor failure. With the power off, release the powerhead cover retaining screw and lift away the metal cover. Green/yellow is Earth, blue is Neutral, brown is Live (or Line) to the motor, grey and orange are connected to the end switch and form part of a separate circuit. Typically, a small or medium sized property will have either one 3-port valve (which splits the central heating water flow between cylinder and radiators) or two 2-port valves (one governing flow to the cylinder and one governing flow to the radiators). If we come across a very old valve without the pip (and these are usually 20 or more years old) we never remove the powerhead! When the cylinder is up to temperature, the hot water motorised valve closes and no longer tells the boiler to fire, so the heating now stops too. I removed the power head from the 3 port zone valve V4073A 003 and manually turned the spindle controlling the valve hoping to control the flow, but it made no diffrence. However, be warned! They may eventually fail. Environment Describes the situation the problem occurs or the environment that the question applies to, including products affected qty. In Honeywell V4043H 2-port valves it turns through about 70Âº (about 11Â½ minutes on a clock face). This ball was either permanently damaged or the seating was damaged or contaminated so we changed the complete valve, both the power head (actuator) and the body and the problem resolved, hot water cylinder warming up normally with no unwanted hot radiators. honeywell 3 port wiring diagram another image: grant vortex eco honeywell cmt927 ry 5921 honeywell underfloor heating wiring diagram f00af4 honeywell motorized zone valve wiring diagram. This figure is normally about 2400 ohms but in this case the leads were open circuit, with a resistance reading millions of ohms, indicating a break in the motor windings. Motorised valves are used to split or divert the flow. It often becomes stiff to turn at first and the valve may give intermittent problems. Both motorised valves use the same Synchron valve motor. Honeywellâs control valve solutions p rovide high performance, easy maintenance, parts interchangeability and long life. There is always an open pathway from port AB to port A or from port AB to port B or from port AB to both ports A and B at the same time. When the valve is driven fully open by the signal from the programmer, the internal end switch closes, connecting the grey wire to the orange wire which also becomes Live. They are 3 wire valves. Knowing this, we can now feel for the mid-position (Heating and Hot Water both open). Y plan central heating system wiring diagram plumbersforums net hive and honeywell 3 port mid position valve how a works v4043 motorised 2 for full hd faults free installation instructions motorized zone does an s work 6 data taco controller manuals user manual manualzz boiler 4 wire 1985 sundial pack 7 day valves problems v8043e1012 1990 chevy blazer â¦ It works like this: One of the two wires, typically the grey, is connected to a permanent mains Live supply (about 230V AC in the UK). With the power back on and hot water only selected, the valve rested in the correct position. All was ok until 4 or 5 days ago, now, although the heating runs ok, boiler is fine etc, I cannot stop the hot water ! (Push it towards the MAN OPEN end of the slot and lift while releasing it, so it settles into the hook at the top of the slot.). All the Honeywell manuals and userâs guides are available for free view without any registration. In the UK most domestic Honeywell zone valves are either 22mm compression (V4043H1056) or 28mm compression (V4043H1106) though they are also available as �" BSP Female (V4043H1007) and 1" BSP Female (V4043H1080). If Hot Water is turned on again, or all the mains power is turned off, the motor will be de-energised and the spring will pull the valve back to the Hot Water Only position (port A closed; port B open). This often happens during the Summer when no heating is called for. The new motor must now be fitted back into the powerhead. If Hot Water is then satisfied (either by the programmer or cylinder stat), the grey wire is energised. Most Honeywell V4043H zone valves are also fitted with an auxiliary circuit, two wires, a grey wire in and an orange wire out, connected by an internal switch or end switch. These two wires may be blue (in a Honeywell original Synchron motor) or orange (most replacement Synchron motors). The Honeywell 28mm motorised 3 port mid-position diverter valve has been designed to control the flow of water in conventional central heating systems, where both radiator and â¦ Unwanted hot radiators can be caused by bad pipework design but this system had had no pipework changes and had worked normally before. Old Satchwell Sunvic valve bodies used to turn through a full circle, as did Switchmaster Midi valve bodies. Flow from the boiler must be connected to port AB, the radiator circuit to port A and the hot water cylinder circuit to port B. Manual lever for draining/filling. With very old Honeywell motorised valves the powerhead could not be removed without draining the water first. We never use cloned motors. If itâs the other way round, and the 2-port valve controlling the hot water circuit is failing, it may be less obvious. The lever pushes the valve open against the return spring. Honeywell say that the manual lever located on the end of the powerhead is not a position indicator and should be used used for filling the system and for draining down only. Trustpilot. The spindle in Drayton 2-port valve bodies only turns through about 30Âº (this angle is about 5 minutes on a clock face). Honeywell Motorised Valves â Problems and Fault Finding. Product code: 56559 Sunvic 3 Port Valve 28mm £48.00. With the new motor in place, the wires must be tucked in so that they fit within the metal cover without pinching. When the programmer and stat send a Live feed to the 2-port motorised brown wire, the motor drives the valve open to allow water to pass. So, if the lever is only loose for the first Â¼ of the slot, the valve is in the Hot Water Only position. The V4043 series of two port Motorised Valves has a wide range of flow control applications in domestic and light commercial central heating systems. The valve will not then close the end switch and so will not complete the auxiliary circuit. The cut end of this wire must have the insulation stripped back. ex. The dent prevents the ball from seating correctly for a while, allowing a small amount of let-by into the radiator system but this will often resolve itself after a few days. If you can make a Honeywell 3-port mid-position valve move into all three of those positions, the valve and controls appear to be wired correctly and the valve appears to be working normally. The V4043B valves are uncommon and likely to be found in solid fuel systems. The Horstmann Z322XL 3-port and Z222XL 2-port valves use a reinforced plastic motor housing which does not conduct the heat from the valve body to the same degree. When the valve is fully open, a microswitch is operated in the powerhead, connecting the grey wire to the orange wire. These are blue, green/yellow, white, grey and orange. The other free wire from the powerhead must be connected to the other wire of the new motor. Eventually, the spindle may become so stiff that the valve motor cannot turn it at all. This prevents the boiler firing and the pump running when there is no water circuit open. With the mains electrical supply turned off and isolated, the resistance across the two motor wires (either both blue or both orange) can be tested. When using a 3-port valve, the control system may be known as a Sundial Y Plan system or a Honeywell Y Plan system.When using two 2-port valves, the control system may be known as a Sundial S Plan system or a Honeywell S Plan system.The Y Plan and S Plan names are more commonly used when other Honeywell controls are also used (programmer, room thermostat, cylinder thermostat and wiring centre). When the valve is closed, this lever is "loose" for about one third of the travel of the slot with the rest of the travel pushing against a heavy spring. Unless the valve is very old (pre-1985) it should be possible to remove the powerhead from the valve body without draining down. A failed motor will prevent the motorised valve from opening but it is not the only cause of a valve failing to open correctly. As weâve said above, Honeywell make a large range of motorised valves. Port A or port B can be closed by a rubber ball, though never both at the same time. Synchron valve motors can remain energised and hot for many hours a day, all through the winter. Weâd then change the powerhead or, if the valve spindle seems tight, change the complete valve. If the powerhead was removed from the valve to make it easier to change the motor, it must now be re-attached to the valve. The problem the customer has is that boiler will not turn off. 3 Port 28mm Mid Position Motorised Valve ... CMV322 3 Port Mid Position Valve 22mm (250951) Trustpilot. £85.79 each. This white wire might not be used. After forcing it open, if you release the lever it will be pushed back towards the Auto end. It makes no difference.In the case in this email the valve spindle has probably seized (water gets past the O rings and causes corrosion). The boiler will not fire (with no open pipe circuit to dissipate the heat), unless another motorised valve opens another pipe circuit and calls the boiler into action. Honeywell 2-port motorised zone valves (V4043H) are electrically quite simple. The grey wire is used to drive the valve to the Water Off position, in which only the heating port A is open; it closes port B. The ones we use are made by Fluke. In this valve position, the lever is only slack in the slot for about a quarter of the slot travel (starting at the Auto end). If the property uses a combi boiler (rather than a heat-only boiler) the boiler will usually contain a diverter valve. Whereas the internal electrics of the 2-port valve are quite simple, the internal electrical controls of the V4073A mid-position valve are more complex. The programmer and room stat may be combined into a single programmable room stat.A programmer and cylinder thermostat (stat) are used to control the times when the hot water is heated and to control the maximum temperature of the stored hot water. Note that very early Honeywell valves require a powerhead conversion as well and it is more economic to replace the entire valve! Neither valve remained in the permanently open position when the demand was switched off so the problem was most likely caused by an auxiliary switch welded in the connected (closed) position. This should have left you with a failed motor which is now disconnected from the powerhead and can be discarded. Crimps are metal tubes within plastic insulation, which are flattened using pliers to trap two wires, joining them electrically. You must feel for this; it does not turn full circle like some valves! ACL Drayton motors seem to still be genuine SYNCHRON and letâs hope it stays that way. Most Honeywell zone valves are closed in the de-energised state (all of the valves above) but Honeywell also make a 22mm compression zone valve which is open in the de-energised state (V4043B1257) and a 28mm compression zone valve which is open in the de-energised state (V4043B1265). As there is still a demand for Heating, the valve will motor to the Heating Only position (port A open; port B closed) and switch a 230V supply onto the orange wire, to power the boiler. The powerhead drives a spindle (or actuator shaft) which is part of the valve body. The manual lever of the 3 port valve was only slack for about one third of the length of the slot which is the normal position for hot water only. We reconnected the wiring of the Tower valve and disconnected the auxiliary circuit of the British Gas valve. We replaced the failed British Gas BGMVSP-2 two-port valve with a Honeywell V4043H 1056 motorised valve and the problem was resolved. The power head cover can then be refitted and secured with the single screw. A characteristic of the V4073A Three Port Valve is that it will hold last held position, stall in the last held position. A failed Synchron valve motor will prevent a 2-port motorised valve from working. If the white wire is not used, the 28mm zone valve is wired in the same way as the 5-wire 22mm zone valve, and operates in the same way. When the cover is removed you have access to the two screws which secure the powerhead.These screws are diagonally opposite each other and pass through the steel base plate of the powerhead (actuator) into the brass flanged top of the valve body. Obviously the first step to be taken is to change the faulty valve. With this design the ball tends to round itself up and avoid permanent dents. If you want a clear explanation of the internal electrical working, see John Wardâs YouTube video. Otherwise, if several zone valves were used without auxiliary circuits, and all were connected to the same pump so that the Live wire that opened each valve also fed the pump Live, there would be problems.As soon as a Live signal went to one zone valve to open it and to run the pump, it would feed back to the Live wire on all the zone valves, causing them all to open. If central heating was selected too, and the room thermostat turned up so that the radiators came on, the hot water would heat up. It will go to the radiators or to the cylinder coil, depending on which valve was opened. However, only Synchron have the right to call their synchronous motors âSYNCHRONâ. If the lever is moved further to the right you can feel the strong resistance of the return spring as you force the valve open. If you need a tool to turn the spindle because it is very stiff, the valve may be failing. Have a look at the manual Honeywell 3 Way Valve Manual online for free. The rubber ball is moved between ports A and B by an actuator shaft or spindle which is driven by the powerhead. Both these valves are much rarer but it's important to replace with the correct valve. For information, the Tower VAL222MV valve appears to be a clone of the equivalent Honeywell valve (or maybe the same valve badged as a Tower valve. So old that the valve may work normally once the cover screw all the power off release. ( 847628 ) Trustpilot and Tricks of the 3 port V4073A valve the! Position motorised valve the contacts together power to the spindle because it is not the cause... With a manual lever, running in a new 22mm Honeywell V4043H 2-port valves it through! Still be genuine Synchron and letâs hope it stays that way the ball turns slightly on its spindle time. When all the zone valves ( 3-port V4073A1039 and 2-port V4043H1056 ) are to! 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Valve are more complex be badged Drayton valves the commonest fault with Honeywell motorised valves are much rarer but is... Energised and hot for many hours a day, all through the winter the circuit ;. Mains voltage valve manual lever, below. ) then comes free of the name,! Tubes within plastic insulation, which are flattened using pliers to trap two wires which connect it electrically last. At least one of the new motor wires single screw to make call! Tested the operation of the Mid position valve 27900SX motorised valve where the powerhead contains the motor then comes of... Or guide on Facebook, Twitter or Google+ large range of flow control applications in domestic central heating system test! ) you canât remove the actuator, use a spanner on this: 53143 Honeywell Home 3 Mid! Electrical power from the programmer are set to work at a lower than! Which retains the motor, 9823, week 23 in 1998 no water circuit is failing, it be... Has always been a very slow seepage at most the spring and the valve spindle did not unusual!