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Joined: Jan 20, 2022
Last seen: Aug 12, 2025

Topics: 16 / Replies: 2423

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RE: Numerous issues – 11kW Daikin Altherma 3

I don't expect they'll use more than 1 temp sensor on the outside unit. Look at your graph.There are three areas of interest The red sector is c...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Well I'm guessing that the temp sensor is positioned where it has access to the surrounding air, but isn't within the air-stream which gets drawn thro...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Jokes and fun posts about heat pumps and renewables

This joke's on me. It's often the case that I use a 3D printer to create a few components needed for an 'energy project'. These can sometimes take...

2 years ago

Forum

Well & Truly Off The Grid

RE: Numerous issues – 11kW Daikin Altherma 3

The actual outside temperature might not be below freezing...... but the heat-pump controller thinks it is.That's what triggers the BUH. Why not jus...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Disabling a feature could just be masking a poor solder joint in a connection to a sensor! Wouldn't it be better to narrow down the search first bef...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Whatever we're looking for is an intermittent fault.It occurs, and then goes away. If you look at the display a few hours later, everything might ap...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

It doesn't matter what the manual states about the BUH operating only rarely.That's just declaring what it's meant to do.But we're looking at a fault ...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Do you have any record of the DHW tank temperature during these night-time antics? 240-litres looks like a great place to dump a shed-load of energy...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Ok. I'm just checking whether there was any manual intervention at 8am-ish on Friday.As you say that there wasn't, then something has occurred to knoc...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Numerous issues – 11kW Daikin Altherma 3

Are those yesterday's readings?Or last Friday's? What 'event' occurred at 8am which might account for the sudden drop in electricity usage?

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Connecting Home Assistant to a Midea Heat Pump

And what perceived benefit does one get from spending £550-ish on such a pump?! Wilo's technical spec suggests that it doesn't run at -9°C but I'm...

2 years ago

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