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SUNandAIR
SUNandAIR
@sunandair
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Noble Member
Joined: Dec 30, 2022
Last seen: Oct 22, 2025
Profile Activity
Topics: 5 / Replies: 499
AllTopicsReplies
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...

6 months 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...

6 months 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...

6 months 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.

6 months 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...

6 months 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 ...

6 months 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...

6 months 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...

6 months 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...

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

Not quite Right Morgan… the freeze stat function monitors system internal water temperature and activates the circulation pump to ensure the outside w...

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

That’s interesting, but obviously concerning also…. Do you know how to access the flow rate enquiry menu on your main controller? IE the screen enquir...

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

@phoenix15 just wondering did you eventually find the other filter. Many of the Mitsubishi installs don’t always use the Y strainer. Instead thy have ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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