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swwils
@swwils
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Joined: Oct 2, 2025
Last seen: Jan 14, 2026
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Topics: 0 / Replies: 40
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

I did not hear back from the tech team. (Assume they are busy). But I have managed to solve my cosy noise issue by about 95%. I can now run it at ni...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@jamespa There is no reason the Cosy couldn't auto-balance, they control the pump and the smarts. All you would need to do is have some software durin...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Fogstar 15.5kWh upright solution

@transparent some inverters implementation of the various protocols is also broken too. At the end of the day these are all just uarts and serial, ...

3 weeks ago
Forum
Energy Storage
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RE: New Fogstar 15.5kWh upright solution

@bash for the price I can't complain. The software isn't even that bad if you have ever interacted with a pylontech battery.

3 weeks ago
Forum
Energy Storage
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RE: New Fogstar 15.5kWh upright solution

@bash I would buy from fogstar again having some kind of check on imported cells is important to me. 👍 I found their service excellent. Also...

3 weeks ago
Forum
Energy Storage
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RE: New Fogstar 15.5kWh upright solution

@batpred the protocol can be a little different between various batteries BMS, the physical connection is the easy bit. It's possible to do, but you...

3 weeks ago
Forum
Energy Storage
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RE: New Fogstar 15.5kWh upright solution

They all use a standard or derivative communication and you can convert between without much issue, I have an esp doing that on my setup because I als...

4 weeks ago
Forum
Energy Storage
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@andrewj they will release smarter controls, its been mentioned lots of times now.

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Fogstar 15.5kWh upright solution

I don't get it because JK to solis is one of the most common configs for these.   Fogstar are great.

1 month ago
Forum
Energy Storage
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@harrisonc mine has level 3 MID monitoring and you can see this power ramping. It's not completely weather comp control, there is a thermostatic eleme...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@andrewj yeah we recreated it. Engineer seemed to think it was inherent to the unit. It's hard to describe; but it's not airborne fan noise, it's an...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@agentgeorge unfortunately mine is a structure borne noise. I can't say for sure; but I think the fan is producing a harmonic booming style noise a...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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