Hi @myanthony and welcome and sorry to hear of your woes.  A few details about your house and system would help. House size and type, ASHP model, radiators or ufh, etc. Also, is your house rented or owned?

There are some Warmflow manuals in the link below near the bottom.  

https://www.warmflow.co.uk/support/manuals-brochures

Thanks for reply Kev.

House is owned by ex it’s 4 bed old sandstone Cottage built around 1900. No underfloor heating have separate emersor to heat water. Radiators are all old fashioned style column/4 fin, 8 years old. ASHP I s Warmflow AS03-R32. I had a look through manual last night but can find solution to it turning off.

Thank you 

Posted by: @myanthony

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Radiators are all old fashioned style column/4 fin, 8 years old.

Did you have a heat loss survey done? Did the installer suggest changing the rads to work with a heat pump?

The Warmflow AS03-R32 is a 20kW rated unit, it's quite a beast. Let's assume that it's running those rads at a fixed temperature of 50 degrees, close to it's maximum of 55 degrees, then the COP and rated output are as follows:

From the manual, which I attach, @myanthony will need to access the weather compensation curve on page 27 and show us a photo of what the curve is set to.

To the OP, what did this new ASHP replace?

@myanthony, about 70kWh per day is easily possible with an old house.  As @oswiu asks, do you have any heat loss calculations?  The ASHP you have is a big one and suggests a relatively high heat loss.  Also are the radiators properly hot or just warm?

There is definitely a timer function on your controls.  Is there any chance this is set to switch the ASHP on and off?  

Remember this last few days is about the worst it will get.

This is all I can find regarding weather compensation. The ASHP replaced a nibe pellux 100. I was told radiators would be fine no idea about heat loss calculations sorry.

@kev-m 

Hi I’ve tried looking through menu and it looks as though there is no timer set. Radiators are just warm not hot.

Thank you 

OK, so you've replaced a pellet boiler which was probably around 24-30kW, and would have been batch fired into a large thermal store or buffer tank. The heating circuit would have been run off this on a time clock and room thermostats. 

The ASHP works differently whereby it should be ON all the time and the weather compensation should have been set to control the indoor temperature.

So you've got nothing that looks like page 27 of the manual?

@hughf 

Yes I know that it should run all the time that’s why I’m in forum as it keeps turning off and engineer isn’t answering calls! I can’t find weather compensation only thing that’s similar looking is 

Posted by: @myanthony

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-- Attachment is not available -- -- Attachment is not available --

@hughf 

Yes I know that it should run all the time that’s why I’m in forum as it keeps turning off and engineer isn’t answering calls! I can’t find weather compensation only thing that’s similar looking is 

Do you have a settings icon, bottom right of the home screen?

EDIT: The temperature graph is encouraging, it shows the defrost cycles aren't too bad and the unit isn't short cycling. It also shows the deltaT on flow and return to be a sensible value.

Ok that’s good. I thought it must be short cycling. Yes there is settings icon.