Drayton MA1 Actuator problem?


Postby GaryATodd » Tue Oct 02, 2007 9:46 pm

Hi,

One year ago (almost to the day) the Drayton MA1 mid-position actuator was replaced (4 years old) on my central heating system as it wasn't operating correctly. It was replaced with another MA1 and the problem was solved. However, I have just switched on my central heating for the first time this year and find that I always get CH with HW even when the CH timer is off. I looked at the MA1 and can see that the valve position is in the middle (HW+CH). If I unsnap the actuator from the valve I can turn the valve manually. I then tried the following with the MA1 removed:

CH OFF
HW OFF
Moved manual lever to HW position
Switch on HW and MA1 lever remains in HW position - correct
Switch on CH and MA1 lever moves to mid position - correct
Switch off CH and MA1 lever stays in mid position - wrong
If I then nudge the manual lever, the MA1 lever then moves to the far-end (HW) which is where it should have gone without me nudging it. The lever seems to be getting stuck.

This looks like a problem with the MA1 but its only a year old - are MA1 prone to failure or is there something else that could be contributing to premature failure ?
GaryATodd
Rank: Labourer
Progress to next rank:
0%
Posts: 1
Joined: Tue Oct 02, 2007 9:31 pm

Sponsor

Simply Build It

Postby DTraveller » Thu Oct 04, 2007 7:38 pm

In short, yes. MA1 actuators are fairly prone to "packing up!". Sorry, can't think of much else that could be causing problem.
DTraveller
Rank: Labourer
Progress to next rank:
50%
Posts: 3
Joined: Thu Oct 04, 2007 7:12 pm

Display posts from previous
Sort by
Order by



  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!



 


  • Related Topics