Last seen: Oct 31, 2025
In this case, it uses the NASA protocol rather than modbus, but the register addresses are the same as far as I know. This is what it looks like on my...
I spoke to Homely about doing that, but he said that I would need to be a qualified electrician to become an approved installer. I have since installe...
@ashp-bobba Thanks very much for your detailed reply. That is really helpful. In situations where the flow rate can deliver heat at a DT of 5 C or les...
I suppose that might be true at a stretch if you were doing space heating throughout the summer, but who does that? I would dig your heels in until yo...
@ashp-bobba Welcome to the forum. I would be interested to understand the reasoning behind your statements. What was your experimental set up? I would...
Can you explain the mechanism for this effect? Could it just be coincidental rather than causal? System volume may prevent short cycling, but there ar...
With your 2091/2092 settings, the heat pump will only cycle off if your 3rd party thermostat is no longer calling for heat. If your home is warm, t...
Those settings exclude frequent cycling as the cause of poor efficiency. With 2091/2092 set to 'Use(Signal only ON/OFF)', FSV 2093 is inactive, so it ...
@raiph I apologise for my incorrect assumption. A PWM pump should maintain your delta T, so I am not clear why you are experiencing problems with a lo...
@raiph You seem to want a Delta T of 5, but your water pump has a fixed speed / flow rate which is currently 15 l/min. Your heat output is determined ...
@dinhp I will try and upload an audio file as it is difficult to describe how it sounds. The noise level will vary depending on how hard the heat pump...
@dinhp Thanks for the extra info. Your COP of 2.49 for today is not great if OAT is 9C, although it was probably colder overnight. Does this include a...
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And therein lies the problem. A higher proportion of p...
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RE: Solar panels on side of house to heat water
My solar panels (both PV and thermal) have not required...
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
This would really be ideal and fans could also add to t...
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RE: One Year Review: Grant 13kW ASHP - A Catalogue of Errors
@solenoid do you have the new smart controller or the o...
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RE: Rate the quality of your heat pump design and installation
@solenoid Welcome. I have made some commen...
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@f1p Thanks for the info, good to know
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@toodles I will do, it can’t go any worse than my last ...
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RE: Configuring third party dongle for Ecodan local control
Yes, it is certainly an advanced feature and quite diff...
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RE: MELcloud scheduling misbehaviour
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
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RE: Replacing my 18 month old Hitachi Yutaki ASHP
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RE: Flow rate discrepancy between ASHP and manifold
Ok, I think I have got to the bottom of the problem... ...
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@grantmethestrength What I mentioned is just out of ...
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RE: Testing new controls/monitoring for Midea Clone ASHP
Very true, that is the standard method (and the one I u...
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RE: Why Millions of UK Homes Struggle With Heat Pumps
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RE: Advice on reading thermal images
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