# My Journey to an efficient ASHP **URL:** \ **Category:** Heatpump\ **Created:** [15 February 2023 13:15 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879 "2023-02-15T13:15:12Z")\ **Posts on this page:** 10\ **Page:** 6
**Author:** ![Zapaman](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/zapaman/32/22773_2.png) [@Zapaman](https://community.openenergymonitor.org/u/Zapaman)\ **Post date:** [15 September 2023 11:39 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/101 "2023-09-15T11:39:19Z")
> [@EnergyPete](#): > > The solution I finally found last October was to manually cap the maximum frequency of the compressor inverter based on the outside air temperature. Hi Peter, which menu option does this (compressor frequency) fall under in the NIBE set-up? ---
**Author:** ![EnergyPete](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/energypete/32/26180_2.png) [@EnergyPete](https://community.openenergymonitor.org/u/EnergyPete)\ **Post date:** [19 September 2023 17:27 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/102 "2023-09-19T17:27:32Z")
From main screen hold the back button to get service menu to appear. Enter the service menu which has the spanner logo. 5.1 Operating Settings-\>5.123 Compressor Curve. Mine is set for -10 Max compressor & 2 Min compressor. The HWS is on Auto. ---
**Author:** ![Zapaman](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/zapaman/32/22773_2.png) [@Zapaman](https://community.openenergymonitor.org/u/Zapaman)\ **Post date:** [19 September 2023 19:27 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/103 "2023-09-19T19:27:48Z")
Ah you mean the compressor curve. Yeah I found it useful to adjust that setting too. ---
**Author:** ![EnergyPete](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/energypete/32/26180_2.png) [@EnergyPete](https://community.openenergymonitor.org/u/EnergyPete)\ **Post date:** [19 September 2023 22:28 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/104 "2023-09-19T22:28:55Z")
I’m sure the reason I had to change it manually is because the settings that influence the Auto function are incorrect. However I couldn’t find any information that detailed which settings these might be. Glad you had already found the setting. It’s made a real difference to the compensated setpoint control. ---
**Author:** ![prwv](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/p/f9ae1b/32.png) [@prwv](https://community.openenergymonitor.org/u/prwv)\ **Post date:** [16 November 2023 09:57 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/105 "2023-11-16T09:57:16Z")
> [@Zapaman](#): > > Ah you mean the compressor curve. Hello. I have been in touch with David for most of 2023 and my NIBE HP is functioning a lot better thanks to his guidance. Coincedentally, we were talking yesterday about manually changing the compressor curve to influence the maximum frequency, because there appears to be a rise in consecutive cycles (perhaps linked to the outside temperature falling slowly). David’s GSHP does not have that service menu option because his older model is “on/off”, not modulating. May I ask what sort of numbers you came up with in the manual setting? I have attached a screenshot from yesterday, the period that triggered the conversation. Thank you Peter ![Screenshot 2023-11-16 at 09.53.31](https://community.openenergymonitor.org/uploads/default/original/3X/f/e/fe9ac85c39382a0a32665222681adc4ccef5c838.png) ---
**Author:** ![Zapaman](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/zapaman/32/22773_2.png) [@Zapaman](https://community.openenergymonitor.org/u/Zapaman)\ **Post date:** [16 November 2023 12:04 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/106 "2023-11-16T12:04:12Z")
![image](https://community.openenergymonitor.org/uploads/default/original/3X/0/5/056e048d1bae2494eb7ed3bd261fec771cfb6006.jpeg) I adjusted the temperature at which the compressor ramps up to max downwards to -10C with the slope adjusted to start a zeroC. So the rate at which the compressor ramps up is now very gentle and will very rarely or never reach the max value… This twitter thread covers this change [https://x.com/Zapaman/status/1525554131435405313?s=20](https://x.com/Zapaman/status/1525554131435405313?s=20) ---
**Author:** ![prwv](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/p/f9ae1b/32.png) [@prwv](https://community.openenergymonitor.org/u/prwv)\ **Post date:** [16 November 2023 12:14 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/107 "2023-11-16T12:14:05Z")
Thank you for the photo and note. Unfortunately, I have never signed up to the social media world so I cannot read your twitter thread. Is it publishes anywhere else? ---
**Author:** ![Zapaman](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/zapaman/32/22773_2.png) [@Zapaman](https://community.openenergymonitor.org/u/Zapaman)\ **Post date:** [16 November 2023 12:23 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/108 "2023-11-16T12:23:01Z")
No not posted elsewhere, but the thread doesn’t provide much additional information (just a little background) so you aren’t missing out on any key details. But you can probably still read that thread without having to sign up to Twitter-X ---
**Author:** ![prwv](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/p/f9ae1b/32.png) [@prwv](https://community.openenergymonitor.org/u/prwv)\ **Post date:** [16 November 2023 12:46 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/109 "2023-11-16T12:46:19Z")
Understood. Thank you again ---
**Author:** ![Les](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/l/db5fbb/32.png) [@Les](https://community.openenergymonitor.org/u/Les)\ **Post date:** [19 December 2023 19:55 UTC](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879/110 "2023-12-19T19:55:51Z")
Hi, the only nibe recommended way of setting up two climate systems (rad and UFH) is to use smo-40 with ecs 40 or 41 add ons for UFH. Ive started with smo-20 and there was no way to set the system correctly. [Previous page](https://community.openenergymonitor.org/t/my-journey-to-an-efficient-ashp/22879.md?page=5)