Uponor underfloor heating

[GasmanxxxR1]

I have a customer who has the above system, it has stopped working on the upstairs circuit.

I have very limited knowledge of underfloor heating. I adjusted the balancing valve to try and force it round the 4 circuits to no avail.

The flow meter phials have orange gunk in them and i am tempted to recommend a powerflush. Is there anything else to try.

Its a new build 5ish years old, no rads just underfloor, vaillant boiler and unvented cyl.

Plastic pipe seems to gunk up worse than copper in my experience.

Cheers guys

 

[missplumb]

could be gunk in the pipes, could be batteries ran out in the room sensors so not telling loops to open, can you see if there is flow through the flow meters? Had loads of chew with Uponor c35 control boxes,

 

[Gray0689]

If it's gunked up after 5 years there a problem somewhere

Did you try taking of the trv type head
Are all actuators opening when calling for heat

 

[GasmanxxxR1]

Yes i took the heads off and they open and shut on demand.

 

[Gray0689]

There may be a head on mixing set like a trv head did you try taking that off

 

[tomplumb83]

Have you got any heat going in? I suspect you have if the valves are opening.
Hmmm.... Can't help you but will be interested to see what happens! Suprised ufh would get blocked to fast, surely not 22mm pipe