Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Warmflow ASHP costi...
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

Warmflow ASHP costing a fortune to run and ignored by installer

 
Page 1 / 7
Air Source Heat Pumps (ASHPs)
Last Post by Myanthony 3 years ago
78 Posts
8 Users
6 Reactions
28.7 K Views
RSS
 Myanthony
(@myanthony)
Eminent Member Member
Joined: 4 years ago
Posts: 33
Topic starter 15/12/2022 10:16 pm   [#677]

Hi everyone. I’ve just recently had warmflow ashp fitted and the installer has been ignoring me ever since. It is supposed to run 24/7 but turns off everyday and I assume costs more to restart. I cannot afford extortionate bills, it’s has been 3 weeks and my usage has been over 1500 kWh!! Before heat pump installed I averaged max 100 kWh per month. I am a single woman and have no idea what to do I don’t even have a user manual and as I say I’m being ignored by installer.



   
Quote
 Kev M
(@kev-m)
Noble Member Member
Joined: 6 years ago
Posts: 1276
16/12/2022 8:23 am  

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

 



   
ReplyQuote
 Myanthony
(@myanthony)
Eminent Member Member
Joined: 4 years ago
Posts: 33
Topic starter 16/12/2022 9:04 am  

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 



   
ReplyQuote
 Oswiu
(@oswiu)
Estimable Member Member
Joined: 4 years ago
Posts: 121
16/12/2022 11:02 am  

Posted by: @myanthony
↑
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?

 



   
ReplyQuote
 HughF
(@hughf)
Honorable Member Member
Joined: 4 years ago
Posts: 489
16/12/2022 11:55 am  

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:

Screenshot from 2022 12 16 10 50 02
Screenshot from 2022 12 16 10 48 32

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.

Warmflow-ZENO-R32.pdf

To the OP, what did this new ASHP replace?

 


Off grid on the isle of purbeck
2.4kW solar, 15kWh Seplos Mason, Outback power systems 3kW inverter/charger, solid fuel heating with air/air for shoulder months, 10 acres of heathland/woods.

My wife’s house: 1946 3 bed end of terrace in Somerset, ASHP with rads + UFH, triple glazed, retrofit IWI in troublesome rooms, small rear extension.


   
ReplyQuote
 Kev M
(@kev-m)
Noble Member Member
Joined: 6 years ago
Posts: 1276
16/12/2022 12:07 pm  

@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.

 



   
ReplyQuote
 Myanthony
(@myanthony)
Eminent Member Member
Joined: 4 years ago
Posts: 33
Topic starter 16/12/2022 12:15 pm  
AE341A63 7A59 4C05 93A1 F092B2640B1A

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.



   
ReplyQuote
 Myanthony
(@myanthony)
Eminent Member Member
Joined: 4 years ago
Posts: 33
Topic starter 16/12/2022 12:21 pm  

@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.

C306FF41 9357 4CD6 AFD3 F669C8E317ED

Thank you 

 



   
ReplyQuote
 HughF
(@hughf)
Honorable Member Member
Joined: 4 years ago
Posts: 489
16/12/2022 12:49 pm  

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?


Off grid on the isle of purbeck
2.4kW solar, 15kWh Seplos Mason, Outback power systems 3kW inverter/charger, solid fuel heating with air/air for shoulder months, 10 acres of heathland/woods.

My wife’s house: 1946 3 bed end of terrace in Somerset, ASHP with rads + UFH, triple glazed, retrofit IWI in troublesome rooms, small rear extension.


   
ReplyQuote
 Myanthony
(@myanthony)
Eminent Member Member
Joined: 4 years ago
Posts: 33
Topic starter 16/12/2022 1:03 pm  

 

image
AE341A63 7A59 4C05 93A1 F092B2640B1A

@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 



   
ReplyQuote
 HughF
(@hughf)
Honorable Member Member
Joined: 4 years ago
Posts: 489
16/12/2022 1:06 pm  

Posted by: @myanthony
↑

 

-- 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.

 


Off grid on the isle of purbeck
2.4kW solar, 15kWh Seplos Mason, Outback power systems 3kW inverter/charger, solid fuel heating with air/air for shoulder months, 10 acres of heathland/woods.

My wife’s house: 1946 3 bed end of terrace in Somerset, ASHP with rads + UFH, triple glazed, retrofit IWI in troublesome rooms, small rear extension.


   
ReplyQuote
 Myanthony
(@myanthony)
Eminent Member Member
Joined: 4 years ago
Posts: 33
Topic starter 16/12/2022 1:22 pm  

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



   
ReplyQuote
Page 1 / 7
Forum Jump:
  Previous Topic
Next Topic  

Currently viewing this topic 2 guests.

Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

Members Online

Click to access the login or register cheese
Protected By
Shield Security PRO