Last seen: May 14, 2025
The standard advice is to only vary settings by a maximum of 2C throughout the day e.g. 20C when you're at home, 18C overnight, and 19C during daytime...
I have a Grant, and the DHW timer sounds similar to yours (they are less than user-friendly), but you can check what the HP is trying to do by looking...
It's being varied by the controller's WC - see below where I've just shown the 'Target LWT' vs OAT (and compressor freq) for that same time period; th...
I suspect that different heat pumps employ different strategies to control their output, as I do see a spike on my Grant (most times) when it starts u...
Hi, My Grant Aerona was installed under the ECO4 scheme by Eco Providers Ltd (assume they are the same - in Lancashire), and they did an 'okay' job ...
Can you see the make/model of the programmer used to control the HW? Or can you upload a picture of it? I have a Timeguard 7-day 1 channel for my HW ...
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That's quite an installation choice for the primary user controller. They didn't bother with any pipe insulation either I see. "When we say 'do...
I didn't think the HP would work at all without the controller working. Maybe it has some default cycles that enable it to work to some extent? The ma...
Regarding hardware requirements, I'm using a Raspberry Pi with 2GB or RAM and a 64GB SD card (Pi's are becoming available again after recent supply is...
@ggw This is a requirement of the Grant pump - Section 9.13 of the Installation Manual: "A flow regulator is supplied with the heat pump. This must be...
I have a Grant Aerona, with EPH room thermostats. That is what is on your image #3, and the receiver is top left on the DHW cylinder in your image #2....
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