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Joined: Jan 20, 2022
Last seen: Aug 3, 2025

Topics: 16 / Replies: 2419

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RE: Numerous issues – 11kW Daikin Altherma 3

It's not common to have any manual adjustment on an UFH manifold like that. Don't start unscrewing red rings unless you are completely certain of wh...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Thanks. So I can see the white mains-powered thermal actuators on the lower (flow) level of the manifolds, and the flow-gauges on the return side. ...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Yes, it will certainly interfere! Every room requires its own stat/timer. If your manifold allows the flow-rate to be changed, then by all means d...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Since the actuators are effectively 'digital', the bathroom will take its heat first because the resistance is lower. But, of course, its thermostat...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Connecting Home Assistant to a Midea Heat Pump

On a related note, I'm currently installing several BMS units from different manufacturers. The Chinese ones have optional colour LCD touch screens,...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Connecting Home Assistant to a Midea Heat Pump

It depends in which clearance-sale you trawl for bargains. 😉 I paid £11 because the wholesaler was going to be stocking a rival to Alpha-wire in fu...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Connecting Home Assistant to a Midea Heat Pump

Yes. If you've only got one RS485 port on the end of the cable, then you won't need a terminating resistor. I'm currently experimenting using a scre...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Connecting Home Assistant to a Midea Heat Pump

Yes of course I'll share what results I get.But as I said, I've only just imported these modules. They're still sat on the workbench, not connected to...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Connecting Home Assistant to a Midea Heat Pump

If you want to place a few temperature or voltage sensors around your heat-pump, you could consider using an analogue acquisition module with a Modbus...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Connecting Home Assistant to a Midea Heat Pump

Oh great - more hardware questions. 😀 FTP is well beyond the cable spec you're after. But it'll do ok.Let's remember that RS485 gets deployed in re...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

I do have whole-house MVHR.I'm going to avoid commenting on that whilst we discuss the heating system. Let's remember @newhouse87 that although we a...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

That's why @derek-m suggested that you're "running it like a gas boiler". 😉 You don't control a heat-pump with periods of being "on" or "off" using...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)