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Central Heating & Storage Heaters Forum
Motorised valve clicking/ticking noise
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<blockquote data-quote="ProDave" data-source="post: 472969" data-attributes="member: 6969"><p>Personally I hate 3 port valves, I would never plumb a system with them, I would always use multiple 2 port valves.</p><p></p><p>The way the 3 port valves work, is at the mid position a microswitch opens and that puts DC to the motor to stall it and hold position. Some overshoot and a couple of clicks is normal as the motor settles in the correct position, but if it keeps on doing it, it's likely the switch is not working properly. Sadly my experience is Danfoss valces do not use good switches and I have replaced several which can be a fiddly job. It's easier (but more expensive) to swap the whole head.</p><p></p><p>If it's a new system and it has done this since installed, don't discount the possibility that it has been wired incorrectly. Another reason for disliking 3 port valves is not all electricians know how to wire them.,</p></blockquote><p></p>
[QUOTE="ProDave, post: 472969, member: 6969"] Personally I hate 3 port valves, I would never plumb a system with them, I would always use multiple 2 port valves. The way the 3 port valves work, is at the mid position a microswitch opens and that puts DC to the motor to stall it and hold position. Some overshoot and a couple of clicks is normal as the motor settles in the correct position, but if it keeps on doing it, it's likely the switch is not working properly. Sadly my experience is Danfoss valces do not use good switches and I have replaced several which can be a fiddly job. It's easier (but more expensive) to swap the whole head. If it's a new system and it has done this since installed, don't discount the possibility that it has been wired incorrectly. Another reason for disliking 3 port valves is not all electricians know how to wire them., [/QUOTE]
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Motorised valve clicking/ticking noise
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