underfloor heating

I recently had an electric underfloor heating (UFH) system installed in my flat. The installer initially shortened the cable from the UFH system, but later realized it was too short. He attempted to extend it by using cable connectors. Afterward, the sensor stopped working and displayed an Er1...

In the summer I replaced a massive Warmflow Bluebird 200 oil boiler holding 50L with a Grant Vortex 36-46 holding 21L. As its colder I have now switched UFH on but boiler short cycles every minute once up to heat. There was no short cycling with the Warmflow boiler. The UFH is set to 45c flow...

Can anyone help? We installed a brand new Veissman Vitodens 111 and underfloor heating system (Ambiente Manifold, Grundfos ump3 auto pump, and Heatmiser Controls) 18 months ago. We've had no issues at the tail end of winter 2022 and all of winter 2023; but when things switched on this week its...

I have a somewhat unusual challenge… My underfloor heating system has been designed for a 60 degree flow temperature solely to satisfy the heat demand of a single double-height large room. In reality we have been running it at 50 degrees because that is enough except on the coldest days. It is...

I'm hoping for someone to help explain the below - I'm not an experienced DIYer but always willing to learn... We have wet underfloor heating on the ground floor and one of the old underfloor heating thermostats (from about 2012) blanked out after a power cut. Basically, the screen never came...

Dear plumbing and central heating gurus, Good evening. I recently noticed that underfloor heating pump is leaking. The heating is working. Due to the leak, boiler pressure keeps dropping. See the photos where the rusty water dripping through. I am wondering, for fixing the leaking, do I need...

Hi everyone, we're thinking of getting some works done in our loft and have a chance to get underfloor heating installed. I have been reading around on this forum and the web and would like some advice before deciding on next steps. We want to get 3 x underfloor heating mats (UFH) across 3...

Hey folks, I’m in the Uk and looking to replace my Danfoss TP4700 with a new thermostat (still searching the similar model with less hassle to replace), the 6 actuators are broken so need to be replaced. The actuators are Giacomini R473 230V 2 wire normally closed actuators, it is difficult to...

I’m in the process of acquiring a new boiler due to the conversion of my loft and the installation of a mechanical ventilation and heat recovery system. I’ve recently discovered that Google Nest is unable to handle multi-zone systems and reverts to a simple on/off thermostat. My preference would...

Hi all I'm having a kitchen extension built and getting UFH installed - the quote for that is £2900, which sounds about right to me. Eventually, I plan to install UFH in the rest of the house myself, so I've asked for a quote for putting a four port manifold on the first floor too as part of...

has anyone attempted a "diy" to replace the flow meters and valve pins on a warmafloor UFH manifold ? also how easy is it to just replace the whole thing as I'm seeing manifolds for under £200 and wondering if its worth buying parts or just replace the whole thing but I'm not sure how straight...

My partner and I just started building a 4mx7m rear extension. We plan to knock two walls down so the extension is part of a large open plan space along with the current kitchen/dining room (also 4mx7m). We've already decided to install wet UFH on the new part, but we are struggling to decide...

Hi all, I’m trying to figure out why the temperature on my water is getting so high that it cuts off my circulation pump from running (greater than 60 degrees). As expected, the thermostat triggers a notification to the control unit that then calls for hot water from the boiler (by opening a...

Hi, we have 4 electric underfloor heating systems in our house, all managed by 4 Thermotouch 5220/5226 thermostats. We recently had a solar system installed which is working brilliantly. When we turn on any of these 4 underfloor heating systems the power draw (regardless of area being...

Hi I've just moved to a new house and I’m looking to replace my current heating system controls with a Drayton Wiser smart system. I have an Ideal Vogue Max System 32 boiler with water tank, a basic Drayton thermostat that controls hot water on a timer and a Salus thermostat. I also have a...

So I have a combi boiler and two zones, one is underfloor heating and the other goes around 9 radiators. There has been alot of black sludge blocking the heat exchanger the last few years. I am planning to get a filter on the system and I was recommended the Magnaclean Pro 2. However I dont...

Hi. I am new to underfloor heating. I am in a new build. I have two pumps feeding two manifolds connected in parallel and feeding two different ground floor levels. There is a hot/cold mix dial for each so supply hot water is diluted to a lower temperature as I understand. While balancing, I set...

I have a Grundfos UPM3 Flex AS pump for my UFH system. The lights on it are as follows: LED 1: Flashing green maybe every second LED 2: off LED 3: Solid yellow LED 4: Solid yellow LED 5: off I understand the yellow LED's indicate the speed/performance setting it is set to and I can change this...

Good afternoon, I was hoping someone could help me/give me advice here regarding improving our heating system at home: We've moved into a house that we bought earlier this year and the boiler and heating controls were outdated so we upgraded the boiler to a Worcester Bosch Greenstar 8000 Life...

I purchased a infrared thermometer to monitor the surface temperature of my floor with the UFH turned on. I have been monitoring it for a few days in the same spots and recording the data every 2 hours during the day. It seems I have a few hot/cold spots in locations I would expect there to be...