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Mars
Mars
@editor
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Illustrious Member
Joined: Feb 11, 2021
Last seen: Aug 15, 2025
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Topics: 305 / Replies: 3072
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RE: L9 error with Mitsubishi ecodan heat pump

@michel54, we had a similar issue recently that triggered an error (we don’t have an Ecodan), which turned out to be caused by a seized circulation pu...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Don’t Install a Heat Pump Until You Read This
8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 3
Views: 603
Reply
RE: L9 error with Mitsubishi ecodan heat pump

Welcome to the forums and sorry to hear of your issues. So, your heating comes on, as displayed on your control panel, but your circulation pump doesn...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Boxt Heat Pump Installation Experience

Welcome to the forums. I was actually wondering recently when we'd get our first Boxt heat pump post, so thanks for sharing. Interesting to see they f...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

A properly installed buffer tank system can be efficient, but the challenge lies in the skills and knowledge of the installer. In the UK, many install...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@ashp-bobba we actually touched on that in yesterday’s recording that will go live on New Year’s Eve. Spoiler alert: there are very few options out th...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@ashp-bobba I think we’ll see a different approach to buffers in the years ahead. Volumisers are a different story. Neil, from Grant UK, stated qui...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@ashp-bobba, after years of conversations with numerous heat pump engineers and industry experts, it’s clear that there’s a significant gap in meaning...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

No, there has never been a case along these lines. There are, however, quite a few where the opposite has occurred. Buffer fitted with poor system eff...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

I have posted these on the forums before, but have been asked by someone on YouTube how a volumiser differs from a buffer tank visually so reposting h...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How Many ASHPs Work Correctly From Commissioning Date ( The resolution page)

I think that's echoed here, because many people come to our site and forums because they have niggles or issues:

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung E911 intermittent issue

We had to fight for ours too, and it's usually a sign that there wasn't one to begin with.

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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