Advice on faulty water underfloor heating system

[Dylan Woods]

Hello all and hope everyone is well,


New to the forum and would be very grateful for any expert help.

I live in a small flat that has underfloor heating zones in living, bedroom and bathroom.

Unfortunately, the floor no longer heats up when I activate the bedroom and living room zones. However, oddly, the heated towel rail in the bathroom gets extremely hot, like all of the systems efforts are going to it.

I have attached some photographs showing the underfloor heating system set up. I have a valliant eco tec pro combi boiler, and the UFH system is by Heatmiser.

Each thermostat is correctly paired with the wireless receiver, however I did have an issue with some faulty batteries in each thermostat that required me to re-pair each thermostat to the receiver. This was quite a while ago and i couldn’t say if this is when the general system stopped working.

Any help would be hugely appreciated. Would be excellent if I could fix the issue myself although happy to get an expert in if required.

Many thanks.

Dylan

 

[ShaunCorbs]

From off take a picture of the flow meters eg with no zone calling

Turn one zone on and do you see the flow meter move down ? Test the other zones the same

 

[Dylan Woods]

From off take a picture of the flow meters eg with no zone calling

Turn one zone on and do you see the flow meter move down ? Test the other zones the same

Hi Shaun,

Thank you very much for the quick response.

I attach photographs labelled as:

no zone calling
zone 1
zone 2
zone 3

I let each zone heat up for around 5 minutes before taking the photographs.
and then waited a couple of minutes before putting another zone on.

hope the photos are clear and thank you in advance for any input you can provide.

Dylan

 

[Ric2013]

When in theory just zone 2 is heated you seem to have flow through all 3 zones. Is the manifold warming up?

 

[ShaunCorbs]

I suspect zone 1 and 3 are linked maybe a big room
2 is an independent zone

All looks to be working tbh and with the manifold moving 80 heat the floor should warm up might take a day to fully warm up