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@editor
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Illustrious Member
Joined: Feb 11, 2021
Last seen: Aug 25, 2025
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Topics: 305 / Replies: 3084
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RE: Ecodan - Legionella Operation Time

It appears that your current Legionella cycle is quite lengthy. Typically, achieving and maintaining a water temperature of at least 60°C for about 30...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Error on Immersun – Error 8 Load Short Circuit

@mikeavison that's a great fix. Well done, and £160 - transistors saved. I don't suppose you took photos of the transistors you replaced as an addit...

1 year ago
Forum
Solar Thermal & Power Diverters
Reply
RE: New radiators installed and system drained - what to do next?

@scrchngwsl, while it's tempting to fill the system and get it running during this cool spell, I would advise against it. Since the UFH (underfloor he...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

A light-hearted, funny video that highlights the divide that exists in the world of heat pump installations as two titans clash over the industry's mo...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan U4 error code

@spacebiscuit, ouch. I can understand why there may be some diagnostics required based on the error. I'll reach out to my installer network to see if ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan U4 error code

@spacebiscuit I'd definitely recommend calling Mitsubishi so they can walk you through it. If anything, it'll point you in the right direction. This i...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan U4 error code

@spacebiscuit I've heard back from Mitsubishi. They've informed me that for error codes they have a platform on their website that initially identif...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Win an Organic Cotton Heat Pump T-Shirt
1 year ago
Forum
Well & Truly Off The Grid
Replies: 0
Views: 783
Reply
RE: Ecodan U4 error code

Welcome to the forums @spacebiscuit. I’ll reach out to Mitsubishi for advice. As an aside, have you reached out to your original installer?

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How Government Grants May Be Inflating Heat Pump Installation Prices and What Could Happen If They’re Scrapped

This is where I struggle. The rad pricing looks fair enough to me. Two years ago (maybe three now) we had five rads replaced. It took two guys about f...

1 year ago
Forum
Government Schemes, Regulations, Planning & Organisations
Topic
How Government Grants May Be Inflating Heat Pump Installation Prices and What Could Happen If They’re Scrapped
1 year ago
Forum
Government Schemes, Regulations, Planning & Organisations
Replies: 7
Views: 512
Reply
RE: Vaillant controls and myVaillant Connect

@hcas, so this is the honest feedback from Vaillant. Technically, yes, you can set the system up without a controller, however, they would strongly ad...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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