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Last seen: Jun 15, 2026
@jamespa Looking at setting up the weather compensation. I know from the building that 32C is fine for temperatures below 0C and 5C. But don’t k...
I dont think it tells us anything else other than the time it takes constant for getting the slab to equilibrium at the specific flow temperature (whi...
If it happens only when it gets cold then it maybe that the heat pump tries to increase flow rate at lower outside temps/higher flow temps, and fails ...
Hmm. What do sensors do if you close 1 or 2 loops down. Does that give a clue. Tbh, apart from faulty sensor, I can't see what this is. Maybe othe...
Have you got a buffer tank, low loss header or plate heat exchanger between ashp and manifold? If so there could genuinely be different flow rates!
. It does but, unless there has been a firmware update, it cant be a controller fault, suggesting its a wiring, connection or valve fault. But that...
OK. The interesting thing is that the heat pump is still in DHW mode, which presumably means that the controller thinks the job isnt finishe...
OK, how do you know its reached the set temperature, and does it continue to heat the DHW at an elevated flow temp (and thus overshoots the DHW set te...
Its not so much challenging as seeking to understand. Your house cools very slowly so provided that the right amount of energy is put in over several...
Have you actually had a Nibe engineer in or just an installer. You probably shouldnt be paying anything if Google is right, it should be a warranty i...
If the house is heating up I wouldn't worry about low deltaT. Lower is more efficient, at least up to the point where the power consumption of the wa...
Understood. Nevertheless this is, with high probability, a very simple and easily pinpointed fault that very likely doesn't require any hitachi speci...
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