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Ecodan - Auto Adapt

Air Source Heat Pumps (ASHPs)

Last Post by HCas 4 weeks ago

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Richard24738

(@richard24738)

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Topic starter 31/05/2024 12:52 pm

Hi. I am new and not very technical so bare with me.

I read that low and slow is best for heat pumps.

However, that seems to be at odd's with the so called best setting for Ecodan's being Auto Adapt which relies on an on/off remote thermostat. Am I missing something?

Does the Auto Adapt also take into account the weather compensation settings in some way?

If it does then I may have an issue in that the external temperature reading is extremely high when the sun is out and that would presumably confuse the ecodan algorithm.

Install 13 April 2024 - 4 Bedroom Brick Detached - Ecodan 11.2kw R32 - 25L Buffer - 250L Telford Tempest HP DHW - All 16 radiators replaced - Auto Adapt - Octopus Tracker

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HCas

(@hcas)

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31/05/2024 1:19 pm

Auto Adapt to my understanding is only available if you have a Mitsubishi thermostat. It increases or decreases the flow temperature depending on the measured room temperature versus the required room temperature. So it's not on / off.
I've heard mixed opinions on it from people.

The issue with the external temperature reading is a common one. We've seen differences between the reading and the actual of 15C at moments, which of course throws your weather compensation completely off. Best is to have the sensor on the north face of your building but even then there are errors.

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JamesPa

(@jamespa)

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31/05/2024 1:33 pm

Posted by: @richard24738

↑

Does the Auto Adapt also take into account the weather compensation settings in some way?

If it does then I may have an issue in that the external temperature reading is extremely high when the sun is out and that would presumably confuse the ecodan algorithm.

My understanding is that it uses the WC settings as a starting point. Exactly what it does from there and whether it 'times out' any measured modifications and constantly refers back to the WC settings has not been published as far as I know.

External temperature sensor should, as @hcas says, be on a north wall or otherwise shaded at all times from direct sunlight (note that 'north' walls can get quite a lot of sun in summer, particularly if they aren't actually facing due north). The idea is to measure the air temperature only.

This post was modified 4 weeks ago by JamesPa

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HCas

(@hcas)

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31/05/2024 1:38 pm

Agree with @jamespa on both!

We're now using weather station data instead of the external temperature sensor. More accurate!

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Richard24738

(@richard24738)

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Topic starter 31/05/2024 2:03 pm

@hcas That's interesting. There must be some sort of algorithm or AI going on. Maybe similar to what Homely does?

How do you use weather station data on a Mitsubishi Ecodan?

Install 13 April 2024 - 4 Bedroom Brick Detached - Ecodan 11.2kw R32 - 25L Buffer - 250L Telford Tempest HP DHW - All 16 radiators replaced - Auto Adapt - Octopus Tracker

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HCas

(@hcas)

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