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Last seen: Aug 13, 2025
My Mitsubishi does exactly the same as David's above, there wouldn't be enough volume of water/heat in the primary circuit alone to defrost the heat p...
If you want to check what your pump speeds are set to here is the video, they can be set to 1-5 for heating and DHW as others have said 17L is low for...
@hillswick if you engage more radiators then it will take longer for the flow and return temps to stabilise so the heat pump will run harder. what f...
@davidnolan22 Nice out of interest do you know how much power it pulls at that temp at 32C my 8.5KW unit pulls about 800W
@davidnolan22 good spot, that should probably be ideally removed not needed for a heat pump. Needs to be set so it doesn't do anything if possible. ...
@sandman1600 If you unscrew all of the actuators then the circuits will always be open regardless of what the thermostats are doing, then you just ...
@sandman1600 Control logic is either auto adapt, weather comp or fixed flow you want weather comp the graph symbol in the image below What is tell...
You don't say what flow temperatures you are running at, are you using weather compensation or a fixed flow temperature? What are the flow and retur...
@sandman1600 What controller do you have there are good videos from mitsubishi on how to set weather compensation, I will assume you have an FTC7 cont...
If you have a Mitsubishi wireless controller then it should be set to Room RC not Main RC, if you use Main RC it will now be using the main controller...
That is the target room temperature and if its showing -20C then its not getting a temperature signal from the thermistor. Are you using the main co...
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