Last seen: Oct 28, 2025
@dowallydrifter OK. I would recommend you read this introduction to ASHPs to help you understand a bit more about them and explain the terminol...
@m1kegibson did you try calling Mitsubishi as suggested by @ashp-bobba, it may be the easiest fix!
What's the 40C shown on the display? It might be worth changing settings and changing them back, it feels like something might be out of sync betwee...
What, if anything, are you finding difficult. What are the weather comp settings?
This is correct. Inverter limits protect grid and internal wiring. Depends on your tarrif. For me it makes sense to heat dhw at night at 6.7p/kWh...
Looking at those photos I agree with @ashp-bobba. To put it another way it looks like its targeting a DHW temp of 40 not 50, which means that it wil...
There are DHW tanks with a built in heat pump that take their intake from the house, the outside world or the loft. Sometimes these are described as ...
By manual I meant constant/DHW priority, ie it should reheat once the temperature drops below (target - hysterisis). Are you certain (a) the unit has...
If it heats reliably when triggered from melcloud it points more to a control misconfiguration than to anything physical. Holiday mode, selecting m...
If the thermostat is connected to the call for heat terminal on the vaillant or myson then I suspect it's also a call for cool (IE an 'enable'). If y...
Good luck. Missing rads definitely was a problem for me. The fancoil was supposedly on 3 month delivery (but actually turned up 4 days later!) and t...
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