Faulty Actuator/Programmer/Thermostat?

[Plumbed]

First post so sorry if I miss something important!

Recently the hot water has stopped working. The timer still comes on but the boiler doesn't kick in. I had a fiddle and if I turn the central heating on and then off the hot water starts (nothing happens with both on, equally this happens the other way around too)! I had a bit of a read about the issue online and though it was a problem with the mid position actuator (MA1) so I swapped it out for a new one but have the same problem.

The actuator is unlocked in the M position.

What should be my next steps?

 

[Mr_David]

When you researched it online what did you research?
It would be helpful if we knew what type of system you're talking about.

 

[Plumbed]

It is a Y-plan heating system with a 3 port valve, 2 thermostats (hot water and room) and a standard programmer.

2 get the HW on i turn on the adv HW then turn the CH on and then off and the HW starts. If I do this the other way around the CH starts.

Thanks for any light you can shed on this.

 

[Mr_David]

I'm guessing by the video I just watch that this a common system in the UK.
Not familiar with them.
If I was sitting in front of it I could probably figure it out.
Sorry, I can't help you.





[ame]https://www.youtube.com/watch?v=vFCOmg3GiZQ[/ame]

 

[Plumbed]

Yes it is fairly standard in the UK.thanks for your time though. May just have to call in the heavies.

 

[Plumbed]

I fixed it today. Thought I would update to let anyone know who has the same problem and can save them time.

It was a faulty programmer. Replaced it with a new one and all is well. I was thrown off by it still sort of working and the timer etc coming on. £50 for a new one problem solved!