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JamesPa
JamesPa
@jamespa
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Joined: Apr 3, 2023
Last seen: Sep 17, 2026
Topics: 27 / Replies: 5392
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RE: Help me keep the faith with my air source heat pump installation

Sorting the sensors - get them to swap them round or put both on the same pipe to demonstrate that they are matched, otherwise they will probably put ...

7 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

  Well its achievable almost for certain. BUT you have to go back to basics and operate 24x7 with the weather compensation correctly adjusted,...

7 months ago
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RE: Failed install (initial SCOP1.8), clueless installer compounded by poor support from Mitsubishi. Help needed desperately!

@bart Thank you for your reply. Once again I am sorry to hear about your problems. You are probably not going to like what Im about to say, but i...

7 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

When you say 'struggling to get up to temp' what do you mean? The default design temp for hallways is 18 so if its reaching that it is getting up to ...

7 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

I just want to repeat and emphasise that, in simple terms, you have to choose between radiator balancing, in which the householder must currently play...

7 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

The following relates only to the temperatures, the noise matter is a separate one on which I wont comment.   OK so the only actual issue ...

7 months ago
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RE: High Temp Heat Pumps for fast warm-up of house

If you insist on this functionality then your principal options are, so far as I can see: 1. Get an R290 heat pump which is about the right capacit...

7 months ago
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RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer

er, if you do this how will the heat pump ever know to switch on? The obvious thing is to tie it to the heat pump's water pump so it switches on whene...

7 months ago
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RE: Failed install (initial SCOP1.8), clueless installer compounded by poor support from Mitsubishi. Help needed desperately!

Here are the BUS rules, note in particular 9(d) Part L of the Building regulations here is also relevant, particularly L1b To be brutally hones...

7 months ago
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RE: Failed install (initial SCOP1.8), clueless installer compounded by poor support from Mitsubishi. Help needed desperately!

I am sorry to hear about the problems. My advice to you would be focus on a small number of provable issues to avoid any possibility that you are per...

7 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

@harriworld Who is TJ? In answer to your question it depends on what the actual problem that the buffer is trying to solve is! (a) If the underl...

7 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

Yes but... If the effect of the buffer is to allow the system to 'get away' with a lower flow rate to the emitters (and thus higher DT for any given...

7 months ago
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