The manufacturing date code is written on the side of this motor, 9823, week 23 in 1998. Replacing a failed Synchron motor in a Honeywell motorised valve is quite straightforward, assuming you know how to work with mains electricity safely. This is called closing the switch. 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.. These items facilitate repair of the valve without the need to drain the system or replace the complete valve. If there are then âstreet' elbows or closely fitted elbows used on either the A or B port then âturbulence' is likely around the area of the valve. We believe that the valves with powerheads which can be safely removed are the ones with the "pip" on the top of the silver metal case but we are not certain of this. They may eventually fail. When this happens, central heating water will seep past and will corrode the metals. Sometimes a powerhead is able to drive the valve only part way open but not far enough for the auxiliary circuit end switch to close. But be warned! Youâll have to check. Note that the grey and orange wires are used differently from the grey and orange wires of the 2-port valve! screwfix are doing another 3 port valve on special offer. Hi all. After forcing it open, if you release the lever it will be pushed back towards the Auto end. This often happens during the Summer when no heating is called for. £111.01 each. However, if you need to replace the motor it may be easier to remove the powerhead so you can work on it in the open. 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 lever will be slack across the whole length of the slot with no end resistance at all. Share the user manual or guide on Facebook, Twitter or Google+. It is now relatively unusual for the white wire (6th wire) of a Honeywell 2-port zone valve to be used. The powerhead or actuator is the electrical section. The valve does not pull the lever over towards the open end as the valve opens. The orange wire then sends a signal to operate the boiler and pump. Sometimes it is possible to free a sticking valve, at least temporarily, by repeatedly driving the valve open manually using the lever (with the system switched off) or by removing the power head (the actuator) and repeatedly operating the valve manually using a small spanner. This is the state either when all the power is off or when Hot Water Only is selected. Temporarily freeing the spindle may make water seep past the O ring seals. The Honeywell V4073A motorised valve rests in the hot water only position (the heating port, A, is closed) when the valve is de-energised. V4044C motorised valves are 3 port diverter valves. 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). Product code: 53143 Honeywell Home 3 Port Mid Position Valve 28mm £142.90. The valve spindle did not feel unusual (tight) when we pushed the lever against the spring and the valve returned normally. The new motor must now be fitted back into the powerhead. With the valve largely open, hot water would heat up if the other Honeywell zone valve (the heating valve) was firing the boiler but not if hot water alone was selected on the programmer or if the room thermostat was up to temperature. All the zone valves would open and close together, defeating the purpose of separate zones. ex. problem is that one of the motorised valves is permanently open (the one for central heating) I've removed the cover and tried moving the valve manually but it is solid. In small properties there may be no other motorised valves.In medium sized or larger properties, using a combi boiler, there may be an additional zone valve external to the boiler which allows the heating to be split into two zones.System boilers may also have a diverter valve or zone valve built into them and might not have any external zone valves. In the past, Honeywell told us that the motors made for them produced a higher level or torque than the standard SYNCHRON motor. ex. With the 3-port valve, port A is closed and port B is open when the valve is de-energised. Check that the valve is not so old that the system needs to be drained before removing it. Honeywell and Drayton motorised valve bodies do not. Honeywell make a large range of motorised valves used in domestic central heating systems. Occasionally we come across a Honeywell motorised valve where the powerhead jams but the spindle (actuator shaft) is still free. Honeywell and Drayton motorised valve bodies only turn through a limited arc and you must âfeelâ for the points at which the movement stops. Honeywell code VCZZ6000. After isolating the electrical power we disconnected one lead from the motor within the valve actuator and checked the resistance through the motor across the two motor leads. Obviously the first step to be taken is to change the faulty valve. The valve body is the brass casting which is bolted into the pipework. A little piece of elegant design work by Honeywell! This valve will then not be able to tell the boiler to fire. On earlier motorised valves, these were both joined to other wires using metal crimps encased in plastic. There are a full range of spares available for the V4073A valve that include the motor, the complete powerhead and the ball and plate kit. The ones we use are made by Fluke. We close a switch to make the circuit complete; when we turn on a light switch we are closing the switch. 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. Honeywell make a large range of motorised valves used in domestic central heating systems. 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. We reconnected the wiring of the Tower valve and disconnected the auxiliary circuit of the British Gas valve. Order online at Screwfix.com. Motorised valves are used to split or divert the flow. Have a look at the manual Honeywell 3 Way Valve Manual online for free. Starting with the controls set for Heating Only, hold the lever tight against the right side of the slot. Under Part L of the Building Regulations, many new properties must have the heating radiators (or underfloor heating) split into two zones. Here is a picture gallery about honeywell 3 port valve wiring diagram complete with the description of the image, please find the image you need. Knowing this, we can now feel for the mid-position (Heating and Hot Water both open). The valve will not then close the end switch and so will not complete the auxiliary circuit. The grey and orange wires remain permanently connected and there is a permanent demand sent to the boiler (and pump). So, if the lever is only loose for the first Â¼ of the slot, the valve is in the Hot Water Only position. Typically, in this position, the lever is loose in the slot for about one-third of its travel, with the remaining two-thirds of the travel pushing against a heavy spring. We changed the motor for a new genuine "Synchron" motor (our experience of cheaper, generic motors is that they can fail very quickly) and the system worked fine, with the mid-position valve opening to heating correctly on demand. The range includes 2 port and 3 port mid-position valves, replacement heads, synchron motors and valve bodies. 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) ! The Honeywell V4043H1106 28mm 2-port zone valve has 6 wires. 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. With the auxiliary circuit disconnected, the valve would still open on a demand from the programmer and cylinder thermostat but would not fire the boiler. The rubber ball in the Honeywell valves can become dented if left in the hot water only position for a long period. The plastic insulation may break, in which case the crimp is discarded. 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. Each. If it does, the valve may work normally once the powerhead has been replaced. This creates a living zone and a sleeping zone which both have separate time and temperature controls to improve energy efficiency. (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.). In Honeywell V4073A 3-port valves it turns through about 45Âº (about 7Â½minutes on a clock face). Tonight, I think I have narrowed it down to the Honeywell V4043H motorised valve. With modern boilers, the boiler sends a Live feed to the circulating pump which then pumps heated boiler water through the valve. Weâd then change the powerhead or, if the valve spindle seems tight, change the complete valve. 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. qty. The first question being if the 2 port is stuck permanently open will this create a permanent demand for heat (regardless what the programmer is set on) or would it be fair to assume that the programmer is also broke? These 22mm valves (3-port V4073A1039 and 2-port V4043H1056) are used in smaller and medium sized properties. The valve typically has 5 wires: green/yellow = Earth; blue = Neutral; brown = Switched Live from room stat or from cylinder stat; grey = Permanent Live; orange = Switched Live feed to boiler (and pump). The electronics in Honeywell motorised valves tend to be quite stable and show relatively few faults but the motor may fail after years of operation. One programmer channel controls the heating (radiators or underfloor) and the other programmer channel controls hot water. Itâs a quick and easy way of fixing the passing valve. The most common by far are the 22mm 3-port, 5-wire, mid-position valve and the 22mm 2-port, 5-wire, zone valve. If itâs the other way round, and the 2-port valve controlling the hot water circuit is failing, it may be less obvious. They are fitted with a manual lever, running in a slot on one end of the valve. Honeywell designed the valve so that the ball turns slightly on its spindle each time it sits down. The valve may be plumbed in at any angle but must not be mounted so that the valve head is below the horizontal level of the pipework. Eventually, the spindle may become so stiff that the valve motor cannot turn it at all. The 28mm V4043H1106 2-port zone valve has a 6th wire, coloured white. The typical sequence with two-port zone valves works like this: The programmer is set for a hot water demand (hot water on) and sends a signal to the hot water cylinder thermostat. In Honeywell V4043H 2-port valves it turns through about 70Âº (about 11Â½ minutes on a clock face). Can be replaced without draining down. Port A is normally connected to the radiator circuit and Port B to the cylinder coil (to heat hot water). The wires to disconnect are the two wires which run from the motor. We find it is normally about 2.1kÎ© (2100 ohms) if the motor is cold and up to 2.4kÎ© (2400 ohms) if the motor is quite warm. 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. It will go to the radiators or to the cylinder coil, depending on which valve was opened. This white wire might not be used. If you want a clear explanation of the internal electrical working, see John Wardâs YouTube video. The Honeywell motorised valve faults detailed above are likely to apply to most domestic Honeywell valves. There's no reason to suspect the programmer. These valves fail-safe in the open position in the event of a power failure or valve motor failure. The boiler has never had to be reset so therefore has never overheated. We changed the failing zone valve with a new 22mm Honeywell V4043H zone valve and tested the operation. When the valve is open, the lever should be free across the whole of the slot. 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. Early Honeywell motorised valves had actuators (powerheads) which could not be removed without draining down first. The heated water can either be sent to the radiators (or underfloor heating) or to the cylinder coil to heat the domestic hot tap water. Environment Describes the situation the problem occurs or the environment that the question applies to, including products affected 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). This should have left you with a failed motor which is now disconnected from the powerhead and can be discarded. 3 Port 28mm Mid Position Motorised Valve ... CMV322 3 Port Mid Position Valve 22mm (250951) Trustpilot. The auxiliary circuit allows several 2-port motorised valves to be used to control separate zones without interacting electrically. Heâs really good! All four of these valves have an auxiliary switch. Unless the valve is very old (more than 20 years), the actuator (power head) should be able to be safely removed from the valve. With some Honeywell 28mm two port valves there may also be white wire which was used with some wiring configurations where the hot water side was gravity only and not pumped; generally this white wire is not required and should be made safe electrically (taped off) and ignored. 1, As the system was "designed" with a 3 port valve, will changing 1 x 3 port valve to 2 x 2 port valves cause any issues with pressures and or balancing the system? That way the ball doesn't sit down and doesn't dent. The inlet port AB can never be closed; the ball only moves between port A and port B. On the other side of the motor there is another flange which is located below a metal tab. Hi all I have a Honeywell 3 port valve and had the heating engineers out as the heating was not working, but the hot water was fine. Please let us know if you like our Plumbing Basics and Tricks of the Trade videos. If the valve spindle seizes up with the valve open, the switch remains permanently closed. If successful it frees the two wires. These are blue, green/yellow, white, grey and orange. 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. If you disconnect these, water will flood out. We also think that all the removable powerheads carried the âpipâ (or raised bump) on the top of the powerhead metal case, but we are not certain of this. If it had opened the heating port (and the lever become loose for all, or nearly all, of the travel in the slot) we would have been looking for a fault elsewhere, either a fault with the central heating programmer or the room thermostat or with the wiring. The V4043B valves are uncommon and likely to be found in solid fuel systems. Remove the motor securing screw which is located at the side of the Synchron motor. Since the grey is permanently live, the orange becomes live and power goes to the boiler (and pump). VAT £40.00. 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 motor can, if necessary, be removed without disconnecting the powerhead from the valve body. When we buy new Honeywell valves to put on stock we check that they are in the locked open "manual" position for storage. Both valves had auxiliary circuits and one of these was causing the boiler to run but we had to decide which. However, only Synchron have the right to call their synchronous motors âSYNCHRONâ. The rubber ball is moved between ports A and B by an actuator shaft or spindle which is driven by the powerhead. With the new motor in place, the wires must be tucked in so that they fit within the metal cover without pinching. We switched off the power and the valve rested in the hot water only position. 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. If you are able to safely remove the actuator, use a spanner to move the spindle repeatedly and it will usually become free. Manual lever for draining/filling. UserManuals.tech offer 178 Honeywell manuals and userâs guides for free. The valve will remain in the Heating Only position (port A open; port B closed). Slide the blunt end of the motor sideways until the flange comes out from the tab holding it down. If both sliding switches on the programmer are set to "off" the boiler stills fires. The powerhead can only fit one way round onto the valve body but if space is tight that might not be obvious. 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. Honeywell publish a Sundial C Plan Brochure and a Sundial C Plan Reference Guide explaining how the controls should be fitted and wired in this case. 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. The V4073A 3-port valve never closes water flow through the valve completely. Only when both white and grey wires are energised (and the valve goes to the Heating Only position) can the orange wire get its 230V supply via the valve itself. Boiler fired up when there was no demand from the programmer, sometimes in the middle of the night. Recent valves have an internal earth wire which connects the cover to the powerhead. 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). This can be done with the plastic in place. As far as we know, the genuine SYNCHRON motors made for Honeywell have two blue wires whereas most genuine SYNCHRON motors have orange wires. Nearly all Honeywell valves have a powerhead (also called an actuator) which can be separated from the valve body. The Honeywell V4073A 3-port valve has five wires. The circulating pump is usually connected to feed water from the boiler into port AB. Using an auxiliary circuit and end switch is clever design for two reasons: If the valve motor fails, the motorised valve will not open. It doesnât matter which of the two motor wires is connected to which of the two free powerhead wires as they are polarity free. In smaller properties there is usually one programmer which has two channels. 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. A characteristic of the V4073A Three Port Valve is that it will hold last held position, stall in the last held position. The problem remained, suggesting it was caused by the British Gas valve. Itâs comprised of a motor and some electronic components and usually has one or more microswitches.These are contained within a silver coloured metal box which is connected to the brass body. If the same fault repeats, it suggests that the gearing in the powerhead may be worn. 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. These crimps can sometimes be re-opened by using pliers to squeeze together the edges of the flattened tube. The valve is not energised. Most two-port motorised valves carry an auxiliary switch which is used to send power to the boiler and pump when the valve is open. The valve MUST NOT be fitted on the return pipework under any circumtances. The auxiliary circuit (grey and orange wires) is commonly used to operate the boiler and/or the circulating pump. The only way to switch off the boiler is by isolating the programmer via the fused spur or by turning the thermostat on the boiler right down/off. The small rectangular brass "tongue" which operates the valve below only turns about 70� for the 2 port valve and only about 45� for the 3 port valves. The small metal gear wheel on the bottom of the motor goes through a hole in the powerhead base plate. Also applies to ACL Drayton, Iflo and British Gas Motorised Valves. The hot water and heating are 2 separate systems, each with their own motorised valves, located under the boiler in a cramped cupboard under the stairs, with the valves about 200mm off the floor. The hot water zone valve on this customer's system was winding most of the way open but not quite far enough to close the end switch, so it could not fire the boiler. The wires should go round the motor, not across the top of it. Honeywell 2-port valves have an end switch in the actuator (also called the power head) which closes (makes contact) when the valve is fully open. There is, however, more information the lever can give us if we know what weâre looking for. Sometimes you can clearly feel that the valve is stiff, indicating that the valve spindle may be seizing up. Power for the boiler is still supplied directly from the cylinder thermostat. 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 This prevents the boiler firing and the pump running when there is no water circuit open. The grey and orange wires are part of what's called an auxiliary circuit. There are lots of poor quality synchronous motors out there. 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. To test correctly, at least one of the two motor wires must be disconnected from the heating wiring circuit. Honeywell 3 Way Valve Wiring Diagramâ wiring diagram is a simplified enjoyable pictorial representation of an electrical circuit.It shows the components of the circuit as simplified shapes, and the capability and signal friends in the company of the devices. It's a fully pumped system with a Y plan configuration using a Honeywell V4073A motorised mid postion 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). The V4043 series of two port Motorised Valves has a wide range of flow control applications in domestic and light commercial central heating systems. Five of these wires are the same as 22mm 2-port valve. Weâre told that the ball touches one edge of the circular port first, causing the ball to rotate slightly on its spindle. (Remember, the orange wire can also get 230V from the cylinder stat if it is calling and a hot water program is on.). This got rid of the immediate problem showing that this valve was causing the problem. Hi all, I have a problem with my system, the HW and CH seem to be on together, when the CH is on it also heats the HW. Motorised valves are often fitted in tight spaces with limited visibility so note the orientation of the powerhead. One of the wires from the powerhead must be connected (crimped) to one of the new motor wires. 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. 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. If you click the link it will open in a new tab or new window so you access both articles. These 22mm valves (3-port V4073A1039 and 2-port V4043H1056) are used in smaller and medium sized properties. Where additional zone valves are used there will usually be another programmer or timer. Each. 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. The Honeywell V4073A is a spring-return valve. Why go to the trouble of draining the system down, changing the whole assembly, refilling, bleeding and having to add new inhibitor, when for a similar price you can just change the head/motor which is an easy half hour job. Water leaves by either port A or port B or by both at the same time. If Hot Water is then satisfied (either by the programmer or cylinder stat), the grey wire is energised. Once the cover has been lifted clear it can be hung to one side. 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. In normal operation, with a heat-only boiler, central heating water is heated in the boiler and then pumped round the system by a circulating pump. 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