Forums

Search with Wattson
Forums
Members
DavidB
Activity
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

DavidB
@davidb
Member
Trusted Member
Joined: Jan 30, 2026
Last seen: May 5, 2026
Profile Activity
Topics: 5 / Replies: 43
AllTopicsReplies
Reply
RE: Vaillant Tech Support Flagged Low DT: UFH Return Cold, Suspected Zero Flow

@bornagain Thanks for the comments and comparison with your own system. My understanding is that the flow rate should automatically adjust to provide...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Tech Support Flagged Low DT: UFH Return Cold, Suspected Zero Flow

Hi everyone, As I get to know my 3.5kW Aerotherm instal I have had a number of calls with Vaillant tech support. A recent call turned up info that t...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed to adjust weather compensation on Vaillant air source heat pump

Thanks for the posts and ref to the video - all of which largely reinforce what I believed I had understood and informed the way I have our system set...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Help needed to adjust weather compensation on Vaillant air source heat pump
3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 15
Views: 1817
Reply
RE: Need help maximising COP of 3.5kW Valiant Aerotherm heat pump

@jamespa Thanks for the commentary and reassuring comparisons with your own much larger system. The energy consumed of 281kWhrs produced heat of 893...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Tech Support Flagged Low DT: UFH Return Cold, Suspected Zero Flow

@editor thanks for the tips which I will try before calling my installer on Monday. Again much appreciated.

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need help maximising COP of 3.5kW Valiant Aerotherm heat pump

Yield info for January. I live on a Scottish island.

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need help maximising COP of 3.5kW Valiant Aerotherm heat pump

January info  

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need help maximising COP of 3.5kW Valiant Aerotherm heat pump

Thanks for requesting this info - I hadn’t seen this data before. Live and learn. Not sure if 1000 cycles is good or bad or period of measurement.

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Tech Support Flagged Low DT: UFH Return Cold, Suspected Zero Flow

Update - I have been checking the UFH return manifold, waiting on a rise in temperature. Response was fairly slow so I figured the heat was being abs...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Tech Support Flagged Low DT: UFH Return Cold, Suspected Zero Flow

@steelbadger yes, HP running “normally” and, if you have seen some of my other thread, I have no stove burning. I have the system in active mode - so...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Tech Support Flagged Low DT: UFH Return Cold, Suspected Zero Flow

@editor so simple, thanks. Reevaluating what I was seeing, the valve was only just cracked open. It meant the flow pipe was warm a meter away from th...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Page 3 / 4
Share:

Join Us!

Worth Watching

Latest Posts

Click to access the login or register cheese
x Powerful Protection for WordPress, from Shield Security PRO
This Site Is Protected By
Shield Security PRO →