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GSHP WOES! Midland based engineer recommendations?

 
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Ground Source Heat Pump (GSHPs)
Last Post by ASHP-BOBBA 3 months ago
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 ASHP-BOBBA
(@ashp-bobba)
Honorable Member Member Professional Installer
Joined: 1 year ago
Posts: 433
13/01/2026 9:44 pm  

@johnbroome perhaps, does it rise in pressure when heated and then drop when off?

 


AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.


   
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 johnbroome
(@johnbroome)
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Joined: 3 months ago
Posts: 11
Topic starter 13/01/2026 10:30 pm  

@ashp-bobba I will take a look at that and then post some pics! Thanks v much!



   
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 johnbroome
(@johnbroome)
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Joined: 3 months ago
Posts: 11
Topic starter 13/01/2026 10:57 pm  

@ashp-bobba Hi there again - does this image help? The needle went up when the heat pump was on.

pressure


   
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 ASHP-BOBBA
(@ashp-bobba)
Honorable Member Member Professional Installer
Joined: 1 year ago
Posts: 433
13/01/2026 10:59 pm  

@johnbroome `yes, worth checking bladder in expansion vessel for sure.


AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.


   
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 johnbroome
(@johnbroome)
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Joined: 3 months ago
Posts: 11
Topic starter 13/01/2026 11:00 pm  

@ashp-bobba Thanks so much for your help!



   
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 ASHP-BOBBA
(@ashp-bobba)
Honorable Member Member Professional Installer
Joined: 1 year ago
Posts: 433
13/01/2026 11:11 pm  

@johnbroome if it is not the pressure in the expansion vessel then just look for a slow leak somewhere, top up as needed.


AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.


   
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