Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Main Forums
Central Heating & Storage Heaters Forum
Honeywell V4073A mid position valve not moving: motor or PCB?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Talk Electrician Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="jt12345" data-source="post: 455529" data-attributes="member: 29695"><p>My apologies - I've been calling the actuator the head.</p><p></p><p>Yes, it does. The whole system works perfectly for a day or two (including being able to select CH), then it seems to get stuck on DHW only i.e. selecting CH does nothing, and selecting CH+DHW only seems to make DHW work. I can temporarily "fix" the problem by moving the lever over at which points it all works perfectly again for another few hours. I've also removed the synchron motor from the actuator twice, and both times the motor has started working (i.e. connecting the motor to the mains supply makes it spin slowly). I've also tried (gently) turning the valve spindle by hand and it seems to turn freely, albeit through only about 15 to 20 degrees of rotation (I assume this is as intended!)</p><p></p><p>It's a classic intermittent problem - every time I strip it down, it starts working perfectly!</p></blockquote><p></p>
[QUOTE="jt12345, post: 455529, member: 29695"] My apologies - I've been calling the actuator the head. Yes, it does. The whole system works perfectly for a day or two (including being able to select CH), then it seems to get stuck on DHW only i.e. selecting CH does nothing, and selecting CH+DHW only seems to make DHW work. I can temporarily "fix" the problem by moving the lever over at which points it all works perfectly again for another few hours. I've also removed the synchron motor from the actuator twice, and both times the motor has started working (i.e. connecting the motor to the mains supply makes it spin slowly). I've also tried (gently) turning the valve spindle by hand and it seems to turn freely, albeit through only about 15 to 20 degrees of rotation (I assume this is as intended!) It's a classic intermittent problem - every time I strip it down, it starts working perfectly! [/QUOTE]
Insert quotes…
Verification
Post reply
Main Forums
Central Heating & Storage Heaters Forum
Honeywell V4073A mid position valve not moving: motor or PCB?
Top