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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Jan 9, 2026
Profile Activity
Topics: 20 / Replies: 3858
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RE: New Mitsubishi Ecodan 11.2kW installation - L9 errors and maybe more

OK thats great, so basically the mixing valve is disabled and the whole system is running at the same, weather compensated, temperature. From this an...

39 minutes ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

My most recent certificate says my supply is TN-S, earthed via the 'suppliers facility'. From visual inspection the earthing 'via the suppliers facil...

1 hour ago
Forum
Energy Storage
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RE: Recommended home battery inverters + regulatory matters - help requested

@transparent thanks. Is the change of earth requirement (ie current arrangement not being sufficient) a consequence of islanding or something else? ...

1 hour ago
Forum
Energy Storage
Reply
RE: New Mitsubishi Ecodan 11.2kW installation - L9 errors and maybe more

So does that mean the rads are operating at the same fixed temp as the ufh, determined by the temp regulator on the manifold. If so what's the point ...

2 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

Thanks for all the help/comments. I completely agree with the above, I just want to be sure that there isn't an 'artificial' blockage at the end req...

16 hours ago
Forum
Energy Storage
Reply
RE: ASHP Energy Consumption: Aira 12kW heat pump

I doubt that matters, ToU tariffs are for the benefit of the grid and electricity suppliers not to aid the transition to EVs. They have been around f...

21 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

  Are those changeover switches, they are labelled as regular on-off switches?   Is this arrangement OK?       ...

21 hours ago
Forum
Energy Storage
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

Thats interesting. Are you saying that all of your house circuits are connected to the inverter when it is operating off grid, albeit some of the loa...

23 hours ago
Forum
Energy Storage
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

Again thanks.   Noted and safety issues are fair enough. The disappointment is (a) the extra CU and more particularly (b) the need to d...

24 hours ago
Forum
Energy Storage
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

Thanks Ah, so that places the 'off grid' port of the inverter between grid and load so protecting the grid. However it does introduce another co...

1 day ago
Forum
Energy Storage
Reply
RE: Radiator sizing sanity check

As I mentioned early on the cost of supplying and fitting a few rads is negligible. It certainly shouldn't come to legal proceedings if this is the b...

1 day ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Radiator sizing sanity check

Thanks for the update. As you say you are now piggy in the middle. Its sometimes said that legal cases are won by those with the best filing syste...

1 day ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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