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Air Source Heat Pumps (ASHPs)
Last Post by bontwoody 4 months ago
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Profzarkov
 Profzarkov
(@profzarkov)
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Joined: 1 year ago
Posts: 51
Topic starter 05/09/2025 11:49 am  

Here's a photo of the whole system & also the ch pump



   
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Profzarkov
 Profzarkov
(@profzarkov)
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Topic starter 05/09/2025 11:51 am  
IMG20250905124737


   
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Profzarkov
 Profzarkov
(@profzarkov)
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Posts: 51
Topic starter 05/09/2025 11:52 am  
IMG20250905124729

 I noticed that the two valves are quite warm too🤔



   
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 JamesPa
(@jamespa)
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Joined: 3 years ago
Posts: 3734
05/09/2025 12:10 pm  

Posted by: @profzarkov
↑

@jamespa just the CH one and no nothing is heating. When I put the demand in for hotter water - it shut down the CH pump plus some whirring of valves - not sure which. But as soon as the HW demand was met, it went back to the continuous running. It was odd that I couldn't run the CH system. Maybe too warm outside? We'll see

OK so what controls the CH pump?  It could be controlled by the heat pump, but perhaps more likely (given you have a buffer)  it could be controlled (directly or indirectly) by the call for heat from the thermostats, or the state of the valves (which may be controlled by the call for heat from the thermostats).  If you can work this out you will know where to look.  Follow the wiring it will give you a clue.  Fiddle with the thermostats and valves that will give you a clue..

 


This post was modified 4 months ago by JamesPa

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
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Profzarkov
 Profzarkov
(@profzarkov)
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Posts: 51
Topic starter 05/09/2025 12:18 pm  

Thanks. No buffer. Def controlled by the Samsung. Thermostats seen to have no effect. Looks like a serious failure on the panel? It's under warranty... .

 



   
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Profzarkov
 Profzarkov
(@profzarkov)
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Posts: 51
Topic starter 05/09/2025 1:17 pm  

Engineer has been. Prob air locks....undid a few things and forced it to heat.....we thought the valves had failed but a rare thing to get both failing. And under a year. The supposed air release valves don't always do their job but the system is working now & the valves have closed down & pump stopped. Yep, simple solution. Thanks for your help 



   
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bontwoody
 bontwoody
(@bontwoody)
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Joined: 4 years ago
Posts: 960
05/09/2025 3:51 pm  

@profzarkov  Good to know in case it ever happens to me. 😁


House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
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