ChristyJH

Temp is set to 48 but currently running at 44. Attached pic. ive just kicked teenage out of bed so will try and bleed now.

Gav. Thanks. On your points. when I put my hand on flow and return downstairs there is a much more noticeable difference than upstairs. on the floor temp I would say they are definitely cold. I appreciate they won’t necessarily get warm but when compare to exactly the same floor downstairs they do feel colder (hence why not getting above about 18c upstairs )

There is a manifold pump upstairs and down stairs. Pic of downstairs attached. I think the blending goes on over at the ASHP/ tank set up in my garage. I can see that the the flow of water for heating is c50c and separate flow for HW at c.48c. I still waiting for access to the bedroom to try and bleed. before this there was always flow on each loop and I tried increasing and decreasing them (ranging from 0.5 to about 5 l per min) but no joy with heating temperature. question. Can you still have an airlock / aide in the system AND get flow? The hot spots in certain parts of the floor are confusing me. thanks.

Thanks. I think the upstairs manifold is the highest point. Do I bleed the valve on the flow or return? Or both? I think I’ve tried that before but a thin jet of water came out so I closed it. Do you need to keep it open for longer and collect the water some how?

Hi there. Thanks for response. Manifold is in teenage daughters bedroom so can’t access at the moment! However, pic of downstairs one attached and no temp gauge on. I seem to recall feeling the flow and return pipes and they were similar temp which was a little concerning(??) but would need to double check this point. stats have been set to 21 for days and never got to that temp. Downstairs reached temp and then switches off. insulation is fine I think. Double layer at least 12inches thick in loft.

Hi there I have a similar problem to the other “zone not warming up” on here. I purchased a new build house with an ASHP in the summer this year so now is the first time it’s really been asked to heat when temps are consistently below 4 or 5 c for a period of time. Downstairs is fine but I can’t seem to get upstairs above 17/18c (despite stats set to 21) and it then drops gradually throughout the night (with stats still on 21). There is a manifold upstairs and downstairs. I’ve tweaked the flow rates on all the upstairs ones, sometimes turning off all downstairs ones and some upstairs (ie. to try and heat just one or two of the rooms) but no joy. I was under the view that because there was flow rate that there wasn’t an air lock or blockage? Is that right? The house stood complete for about a year before we moved in so could air have got in the system? I thought the builder might have put in too thick carpets however I’m not sure that’s the case as some of hard floors upstairs (bathrooms) aren’t really warm and carpets in areas down stairs are fine. Also, in some of the rooms upstairs with carpets you do feel occasional hot spots (ie nice and warm) but then step three feet to the side and it’s not warm. Also, if you later go back to that hot spot it is no longer warm. Any thoughts welcome. Thanks in advance. Chris