Pancake Posted February 16, 2020 Share Posted February 16, 2020 Hi, looking for a bit of help if possible. I completed a new build last January with wunda underfloor hearing running from a combi boiler. A few weeks ago the main floor area stopped working. I changed the thermostat in the room. The problem I have is the veils on the manifold don’t seem to be moving and some of the areas / loops are cold. They are supposed to be self regulating actuators. Any thoughts? Thanks james Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 16, 2020 Share Posted February 16, 2020 1 hour ago, Pancake said: Hi, looking for a bit of help if possible. I completed a new build last January with wunda underfloor hearing running from a combi boiler. A few weeks ago the main floor area stopped working. I changed the thermostat in the room. The problem I have is the veils on the manifold don’t seem to be moving and some of the areas / loops are cold. They are supposed to be self regulating actuators. Any thoughts? Thanks james Have a read here; Link to comment Share on other sites More sharing options...
Pancake Posted February 16, 2020 Author Share Posted February 16, 2020 thanks Nick, some of the zones are warm and the thermostat says it’s heating but none of the veils are moving at all. The zone in the hall is cold however the thermostat says it’s at the designated temperature. This is the one closest to the manifold. As I said it all was working properly before so I am unsure why it’s doing ng this now. Thanks James Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 16, 2020 Share Posted February 16, 2020 4 minutes ago, Pancake said: thanks Nick, some of the zones are warm and the thermostat says it’s heating but none of the veils are moving at all. The zone in the hall is cold however the thermostat says it’s at the designated temperature. This is the one closest to the manifold. As I said it all was working properly before so I am unsure why it’s doing ng this now. Thanks James If the stat says it’s up to temp then it won’t come on. Try turning it to max ( 30oC ? ) and report back after 24 hrs. Link to comment Share on other sites More sharing options...
Pancake Posted February 16, 2020 Author Share Posted February 16, 2020 Will do mate, thanks Link to comment Share on other sites More sharing options...
JFDIY Posted February 16, 2020 Share Posted February 16, 2020 Are the manifolds actually hot? I'd take one actuator off and see if any flow occurs, could be the pump is goosed. Link to comment Share on other sites More sharing options...
Pancake Posted February 16, 2020 Author Share Posted February 16, 2020 Yeah the manifold is hot and some of the outlet pipes to the zones are hot. I took one actuator off and the water came out hot Link to comment Share on other sites More sharing options...
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