Drayton training - Motorised Valve fault finding

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3 жыл бұрын

Drayton Training Manager James guides you through the testing of Drayton actuator heads to diagnose issues.
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Пікірлер: 37

@user-dd5zy8vc4j 9 ай бұрын

I had the same problem as other comments with the heating constantly on. This was found to be because the 2 tiny tabs holding the micro switch had broken off. They are not robust enough to cope with the many heat cycles they will experience. I 3D printed a little spacer to push up against the back of the micro switch. Next problem I have had is the posts for the ends of the tension springs have broken (on 2 valves!) which is apparently a common problem. Had to glue (and strengthen) this up with some toughened epoxy and a screw. The design of the mounting plate needs to be looked at to beef up these two weak areas. I could buy a replacement head for £59 or an entire new valve for £56 (work that one out!) but it would probably break again in 2 years time. Other than that a nice valve.

@Phiyedough Жыл бұрын

Thanks for this. I have an MA1 that I just use as a simple diverter valve. I'm in Croatia but ordered the valve from UK (before Brexit) It works if I connect mains direct to the motor but not if I connect live to the white + grey and neutral to the blue. From what you say I don't need the pcb so I could just run new wiring direct to the motor. One point that you didn't cover is the manual mid position selection. That has worked OK so far but I have always been worried that the motor might be unable to reset that button in addition to the normal loads.

@Draytonheating Жыл бұрын

We need a little bit more information, please could you contact our customer services at 0333 6000 622 or customer.care@draytoncontrols.co.uk

@SkillBuilder Жыл бұрын

given that the synchron motor doesn't burn out why do they fail? Good video you did well with it

@Draytonheating Жыл бұрын

If the value doesn't move when energised it could be a problem with the motor or the value body could be seized. There are also micro switches inside that can stick if you draw to much current through them.

@TheSimonakay 8 ай бұрын

what would likely draw too much current through?@@Draytonheating

@jayseabie215 Ай бұрын

They just get gunged up. The small amount of lubrication in them can harden or evaporate over time.

@KevL3452 Жыл бұрын

Hi, great video and really useful, its great a manufacturer is willing to share this info. I have an MA1, 3 port mid position valve which for the most part seems to work ok but it has recently started "clicking" whilst in the M position when the HW is on and the tank thermostat is calling for heat, CH is off. The valve does move between W M H so I don`t think its seized, I would value your opinion before replacing anything, thanks

@Draytonheating Жыл бұрын

First thing to try is to remove the activator from the valve body by pressing in the button on the opposite side of the position indicator. Then try calling for HW, both, CH only ect and see if it drives to the correct position when not on the body. If this works, it suggests that the valve body is seized however, the fact that you are hearing clicking sounds like something is failing within the activator itself.

@KevL3452 Жыл бұрын

Thanks for the info but I decided to replace the actuator (at great cost) just to resolve the problem as the valve was held (not seized fortunately) in the mid position so both HW and heating were running at same time when only the hot water was required. Having followed the testing procedure in the video to confirm the fault on the bench I took the unit apart and found the top micro-switch orange button was stuck into the switch, a slight press released it. After reassembly and test it works fine, also the orange wire max voltages I found were around at most 27vAC not mains level but I agree, test with caution. Just to note that when the valve moves from "W" through "M" to "H" there should be 2 distinct clicks on the MA1, if only one suspect a stuck micro-switch, easy fix. Hope this is helpful to others

@williamcheung5942 Жыл бұрын

Hi there, I have a mid position valve actuator and I'm only getting hot water no CH. I notice that the actuator doesn't turn to the CH position. I replaced the motor and it doesn't seem to help. I can still manually turn the CH on using the manual lever. I'm just wondering what can go wrong. Are the diode, resistors or microswitches prone to failures. Thank you for your help

@Draytonheating Жыл бұрын

For the actuator to move all the way over to the central heating position the grey wire needs to be live when there is no call for hot water. Our customer service team can guide you through expected voltages if you ring them when you're in front of the system - 0333 6000 622

@zippo101 Жыл бұрын

hi there..... I've got a slight problem with my 3 mid position actuator.... its stuck on heating, even when the heating is off.... soon as I knock the power off.... it returns to the water position.... soon as I slightly touch it ( with power back on) , it moves on its own to heating position, and again the central heating is off ? only thing I can think of, is the micro switches have failed.... any chance I could get some info on said switches? simply solder some news ones on? Thanks in advance :)

@Draytonheating Жыл бұрын

Our technical support have a fault finding routine that they can guide you though to try and identify what the issue is. Please give then a ring when you are in front of the insulation - 0333 6000 622

@Horizon301. Жыл бұрын

Did you sort this?

@SteeeveO 19 күн бұрын

I have a problem with my Drayton unit with the heating being on when it shouldn't - so I assumed it was just a sticking valve. Removed the motorised head & found that the brass valve was easily moved, so it looks like the motor itself is faulty, however the plastic manual lever seems to be locked solid. Any thoughts before I call the engineer as I don't really want to start dismantling the motor. Thanks.

@Draytonheating 12 күн бұрын

Sorry to hear you are having issues. If you contact our customer service team they will be able to assist you - 0333 6000 622

@NivagSwerdna 9 ай бұрын

Is a "DRAYTON 27651SX 3 PORT MID-POSITION VALVE ACTUATOR" a suitable replacement for an old MA1? i.e. is the valve assembly geometry unchanged?

@Draytonheating 9 ай бұрын

Yes, 27651SX is the Screwfix part number for the MA1 actuator only. So long as the old actuator has the push button to detach from the body this will fit.

@TCSC47 6 ай бұрын

At 14:37 , the video freezes until 16:06 whilst audio continues. There is a lot of verbal description which is difficult to follow because I am expecting the video to show me something.

@Draytonheating 6 ай бұрын

Maybe say thanks for the feedback and we'll look to get it remade

@hasmitachauhan5276 2 ай бұрын

I have two za5 for dual zone but zone 2 doesnt work independently, the lever has to be to the left to heat up zone 2. Zone 1 level is to the right and both resting to a. What could be the issue?

@Draytonheating Ай бұрын

Have a chat with our customer service team who can assist you - 0333 6000 622

@hippopotamus86 Жыл бұрын

I have a mid position valve (marked W M H), It goes over to H for heating, hits the switch and fires up the boiler/pump. But, when heating is turned off, it doesn't move back to W or M, sometimes the boiler remains on, sometimes it doesn't. I changed the actuator, same issue. But if there's a call for hot water, only then does it move back over. Is this correct? I thought if there's no call for heating, it should get pulled back over to hot water / mid by the springs.

@Draytonheating Жыл бұрын

What you described is the value working as intended. The valve will remain the last called for position till it's told to go elsewhere. If heating was the last call, the value will remain the H position but the boiler should stop firing if there is no demand. The value won't move until water or both are called for.

@Horizon301. Жыл бұрын

@@Draytonheating is there anything else that can cause this issue with heating not always turning off and leaving boiler on?

@Draytonheating Жыл бұрын

It could be an internal boiler issue that keep sit running but to establish this we would need to be measuring the voltage on the white wire of the valve under the fault condition.

@chriswestwood2681 Жыл бұрын

Hello. I have the ZA5/679-2 valve. My problem is that i run the hot water on constant and the heating on timed, but the radiators are heating up. Obviously the valve is not closing correctly. It moves freely between heating and hot water, when called for by the controller. The valve moves freely by hand with the head removed. Can anyone point me in the right direction? Many thanks

@Draytonheating 9 ай бұрын

It sounds like there may be some debris within the valve body that is preventing the paddle from sealing against the valve seat. Sometimes running your heating and varying the pump speed is enough to dislodge this. Otherwise, you may need to consider flushing the circuit

@ZedsDeadOK 4 ай бұрын

Do you know the answer to this problem which I think is more electrical than a problem with the MA1, In the morning I have the hot water timed to come on, half hour later I have the heating timed to come on and remain on for the rest of the day. I've recently noticed that when the hot water goes off the indicator on the actuator remains in the mid position and the boiler fails to fire to keep the heating on, If I switch the mains off to the whole system the actuator then moves to the H position and because the timer is still calling for heating the boiler then fires up, is the fault coming from the boiler or timer?

@Draytonheating 4 ай бұрын

Have a chat with our customer services team who will be able to run through some fault finding routines - 033 6000 622

@Black_Isle Жыл бұрын

Can these leak from the head or is it just that the valve has a leak and the water is passing through the head taking the easy route?

@Draytonheating Жыл бұрын

The activators are detachable from the body so water shouldn't naturally have access to the activator however, if you get a leak pass the spindle, the system press could force water into the activator.

@ptibbitts-nu9jr 7 ай бұрын

My MA1 valve appears to have failed. The boiler fires up until the hot water is up to temperature, the cylinder stat then actuates the valve to motor to heating cycle - so far so good! But when the heating cycle switches the valve off it stops the valve from working the next cycle. On inspection, it appears the cam is not activating the micro switches, full movement of the cam does not even contact the grey or white micro switch tabs. What has happened here? - the black plastic cam and the little microswitch buttons are nowhere near each other !! The microswitches seem too far away from the cam, the switch buttons don't appear damaged or broken off, could the black cam profile he ave worn? Help appreciated!

@Draytonheating 6 ай бұрын

Chat with our customer services and they can help you run a test on the actuator - 0333 6000 622.