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ASHP and Tado

Gfletcher · 2022-11-04T20:11:57Z

Hi All, I have a Mitsubishi Ecodan, Mixergy and Tado set up but something isn't quite right with the heating. The Tado is calling for heat but the heatpump isn't providing. The FTC5 controller is in the same cupboard as the mixergy tank - so it is quite warm. I have managed to get the heatpump running by turning up the target temp on the FTC5 controller to 40degrees (instead of the 21degrees it was set to) because I wondered whether it was sensing a 'room' temp of higher than the target and therefore not coming on - but I am guessing! Any thoughts as to what might be happening? And then what I ought to do as a permanent fix? Any help gratefully received. Thanks, Gavin

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Air Source Heat Pumps (ASHPs)

Last Post by Derek M 4 years ago

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Morgan

(@morgan)

Noble Member Member

Joined: 6 years ago

Posts: 704

05/11/2022 12:14 pm

@gfletcher

That’s the weather comp setting but you have to set the curve in settings.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

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Gfletcher

(@gfletcher)

Eminent Member Member

Joined: 4 years ago

Posts: 24

Topic starter 05/11/2022 12:23 pm

@morgan Brilliant - thanks, I'll look at the curve settings.

👍

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Morgan

(@morgan)

Noble Member Member

Joined: 6 years ago

Posts: 704

05/11/2022 12:24 pm

@gfletcher

you’re welcome.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

ReplyQuote

Derek M

(@derek-m)

Illustrious Member Member

Joined: 6 years ago

Posts: 4425

05/11/2022 12:36 pm

Posted by: @gfletcher

@morgan Brilliant - thanks, I'll look at the curve settings.

Hi Gavin,

Obviously you need to set the slope of the weather compensation to the requirements of your particular home. I would suggest that you start with the following settings and then fine tune as necessary.

Cold end: LWT of 50C at amb. of -5C.

Warm end: LWT of 25C at amb. of 20C.

The indoor temperature will probably change very slowly, so monitor your system for quite a number of hours and let it stabilise before making any adjustments.

I hope that this helps.

👍

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