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New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless

 
Air Source Heat Pumps (ASHPs)
Last Post by GutoFfowc 1 hour ago
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 GutoFfowc
(@gutoffowc)
Eminent Member Member
Joined: 3 years ago
Posts: 19
Topic starter 25/08/2026 6:48 pm   [#3145]

 I am feeling baffled and worried:

We are having a an Arotherm Plus 10kw fitted to replace an obsolete heat pump.
We have underfloor heating on the ground floor; serving:
large open plan living kitchen area;
a hallway with stair ie double height space and;
a study.
Currently these are controlled by three separate wall thermostats.

Upstairs are radiators on one loop controlled by a wall thermostat on the landing.

The contractor has yet not wired and commissioned the system, but has brought 2 wireless sensocomfort controls, one for down stairs and one for upstairs.

When he came to assess the system, we told him that we'd had issues with the manifold actuators, and the living room overheating because it was being heated when the hall thermostat was demanding heat, and that a single zone for the ground floor wasn't going to work.

This was fixed when new actuators were fitted and it was all working fine before the old ASHP fan motor failed.
Now we seem to be facing an installation that will create the same problem.

The technology Vaillant is offering in their controls is way too complex for me to grasp, and the fitters didn't seem to be cognizant of the issue.

Does anyone know if a wired system to the existing thermostats can be adopted? Rather than the wireless Sensocomfort system proposed?

 



   
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