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Mars
Mars
@editor
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Illustrious Member
Joined: Feb 11, 2021
Last seen: Aug 22, 2025
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Topics: 305 / Replies: 3081
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RE: L9 error with Mitsubishi ecodan heat pump

@michel54, I reached out to our contact at Mitsubishi UK, and they’ve suggested getting in touch with Mitsubishi France, as they’ll have their own sup...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Has anyone replaced an old ASHP with a new one?

@judith, cynical, but possibly very true 🤣 @pressure, I'd definitely get a second and third opinion.

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

Welcome to the forums. And this is precisely why the heat pump installation landscape is such a mess and we're getting such varied levels of instal...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: From thinking about a 7kW Vaillant ASHP to a subpar installation and my complaint.

@suzyq, as I mentioned in my email, your case is highly complex, and any guidance I offer won’t directly prompt action from the relevant stakeholders....

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Difficult positioning of air source heat pump

@rikiarn I’m going to be really curious what Aria propose. I’m not usually a fan of suspended heat pump installations, but judging by your photo, th...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Getting the best out of a heat pump - is Homely a possible answer?

@elliotmair welcome to the forums. Grant is 'compatible' with Homely. Have you got Homely, or are you thinking about getting it, and what are you hopi...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea 16kW R290 ASHP with plans for battery, PV and monitoring

@amuseboucheuk welcome to the forums. @cathoderay can probably point you in the right direction.

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Don’t Install a Heat Pump Until You Read This

Welcome to the forums, @Andrew thornton. Sorry to hear about the challenges you’re facing. While I truly appreciate your interest in my book, it’s des...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Share Your Experiences with Heat Pump Manufacturer Support

@judith, that’s really interesting feedback. When I speak to installers, they often rave about the post-installation support that Vaillant’s regional ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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: 618
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)
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