Vaillant Ecotec plus 428 No heating

[Deleted member 120897]

You need to find the wiring center and put the heating on.

Then find the live from the thermostat to the brown wire for the heating motorised valve, test (on voltage ac) between neutral/earth and the brown (live) and the reading should be 240vac or close to it. If that is good then proceed to test between neutral/earth and orange and should have 240vac.

If you don’t get 240vac on the neutral and brown, then it could be a dead room stat.

 

[Vespertinestar]

Thank you so much for your replies so far, they've been very helpful as with your assistance I've narrowed it down to the wireless room stat being faulty; once this is bypassed the heating works. Can anyone tell me what the best replacement (same functionality) for the mentioned above thermostat and controller would be?

Warmest regards, Matt

 

[ShaunCorbs]

I use eph combi pack 4

 

[Deleted member 120897]

Can anyone tell me what the best replacement (same functionality) for the mentioned above thermostat and controller would be?

Warmest regards, Matt

There’s literally 100’s on the market, just stay clear of the same one as yours, Salus or Secure/Horstmann.

 

[Vespertinestar]

There’s literally 100’s on the market, just stay clear of the same one as yours, Salus or Secure/Horstmann.

Ah, okay thanks for the heads up as I was perhaps looking at the Salus rt310rf as a fairly direct replacement but if they're no good I'll keep looking. The combi pack 4 looks great but has a lot of extra functionality I don't really need at the moment, thank you for the suggestion though, it remains on my shortlist.

Warmest regards, Matt

 

[Deleted member 120897]

Ah, okay thanks for the heads up as I was perhaps looking at the Salus rt310rf as a fairly direct replacement

Altech are made by salus. Have a look at Esi or Heatmiser.

 

[Vespertinestar]

Altech are made by salus. Have a look at Esi or Heatmiser.

Thank you all so much for your replies. I have replaced the thermostat and the heating works again, ready for winter, when we will not be able to afford to turn it on

Warmest regards, Matt