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SUNandAIR
SUNandAIR
@sunandair
Member
Noble Member
Joined: Dec 30, 2022
Last seen: May 21, 2025
Profile Activity
Topics: 5 / Replies: 490
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Reply
RE: Jokes and fun posts about heat pumps and renewables

I woke up with Buffer Tanks on my mind last night along with an old reggae musician (sadly now departed). So in my sleep this thought had hit my funny...

1 week ago
Forum
Well & Truly Off The Grid
Reply
RE: Ecodan UD 0-0 error

@gary ouch.

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump Manufacturers Recommending Buffer Tanks

Nice idea. Clever system, sensing the frost quite early in order to raise the temperature quick enough. As you say it’s a high temp solution. But soun...

3 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Is Your 6kW Air Source Heat Pump Really a 6kW?

@johnmo I think we’ve been trudging through the same black hole of heat pumps for roughly the same time. My post above wasn’t really about user t...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is Your 6kW Air Source Heat Pump Really a 6kW?

This output rating is very much of interest since a digitally altered HP may possess all the limitations of the higher output model such as minimum ou...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@johnmo are you commenting on @editor s opening post? If it is then I guess you’re commenting on this part of it; ”If the Volumiser is on the Re...

3 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@johnmo yes I can believe that. It seems to be human nature to keep dong what we did before.

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan UD 0-0 error

Hi Gary, haven’t seen full numbers on your error code but UD appears to be an overheat protection code. You could also do an Info request… like the...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@heatgeek I kind of get it… but aren’t you still in the same situation of having excess flow temp water at the bypass entering the buffer at circa 23 ...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

This is very impressive. I would not have expected the cop to increase to the extent of your graph as the ambient readings had dropped between esp bet...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Ecodan L9 error - No Heating but Hot Water

@phoenix15 I hope you have success with finding a Mitsubishi accredited engineer very soon. Esp. If you have a leak as well. it may be that over tim...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help with understanding my Mitsubishi Ecodan air source heat pump

@patch I think @ashp-bobba gave you some great pointers about low temperature operation. While it is more efficient to operate at lower flow temperatu...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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