# \[APP\]\[Pro\] Alsavo Heat Pump for Swimming Pools **URL:** \ **Category:** Apps\ **Tags:** app, homey-pro\ **Created:** [April 24, 2024, 9:33pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819 "2024-04-24T21:33:47Z")\ **Posts on this page:** 20\ **Page:** 7
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 16, 2024, 6:11am UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/123 "2024-05-16T06:11:57Z")
Good morning Gal At this time, I can only report that Homey is connected to Alsavo šŸ’Ŗ And todayā€™s promising day with lots of sun will put it to testing and it will have a some start/stop via flow in Homey. letā€™s see and I will report to you later in the day Michael ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 16, 2024, 6:41am UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/124 "2024-05-16T06:41:51Z")
Thank you, Michael! ---
**Author:** ![Mainnsto](https://avatars.discourse-cdn.com/v4/letter/m/ac8455/32.png) [@Mainnsto](https://community.homey.app/u/Mainnsto)\ **Post date:** [May 16, 2024, 9:10am UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/125 "2024-05-16T09:10:34Z")
It just works great so far! Now - we have a field for delta-T - if you REALLY would like to nerd-out with it in a future update, you could: Add a manual input field in app settings where user put flow rate (fixed estimate, or variable from other device), then you could add a calculated capability using Q=m \* Cp \* dT to calculate the power the heat pump provides to the water in kW šŸ˜ƒ šŸ˜„ Power [kW] = mass flow [kg/s] \* specific heat capacity [kJ/kgĀ°C] \* temperature difference [Ī”Ā°C] - mass flow kg/s can be converted in code from flow rate eg. 3600liter/hr~1kg/s - specific heat capacity can be hard coded 3.85 [kJ/kgĀ°C] for water, or set by user in settings - both values above depend slightly on salt vs. fresh water (density and heat-capacity). A selection/drop-down could select between hard coded values for both. ā€¦and you can even (now weā€™re really getting deep), subtract the live-energy the compressor and fan is using - which is also known - and calculate your ā€œlive-COPā€ šŸ¤“ Sorry for nerding. In any case, i am already happy with the APP! ps. i tried both of these by just calculated logic variables, work pretty good - but they are approximates! ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/2/f/2fc6645b9659dc985c65a187af64fcb28aea5745.png) ---
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 16, 2024, 11:41am UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/126 "2024-05-16T11:41:31Z")
@Gal_Carmeli Hi Gal My flow start up the Alsavo heating pump, but now it has lost the connection again between Homey and Alsavo Unfortunately, I cannot send a diagnosis report from Homey. as I have a bug that Homey support is working on. I get this Rate limited error every time I try to send a report. ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 16, 2024, 11:59am UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/127 "2024-05-16T11:59:49Z")
Darnā€¦ I canā€™t do much if I donā€™t have the logsā€¦ Cn you please check which app version do you have? When you restart the app, the connection is restored? ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 16, 2024, 12:37pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/128 "2024-05-16T12:37:32Z")
@Michael_von_Barner - one more thing - look at the value of the last capability: ā€œLast Update Timeā€. ![WhatsApp Image 2024-05-16 at 15.31.06_7ba0bf5f](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/2/923268a407f4cf9bce9235f68cbf7286cd34b2b4.jpeg) The time mentioned there should be ā€œfreshā€ (smaller than 5 minutes ago). Is this the case? What does it show? ---
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 16, 2024, 2:56pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/129 "2024-05-16T14:56:10Z")
@Gal_Carmeli The last update time was up to date within some seconds. It helps to restart the Alsavo app, and after that it could stop via Homey. ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 16, 2024, 5:14pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/130 "2024-05-16T17:14:52Z")
Wow! Cool stuff, but I think itā€™s too complicated for the average user to configure and to use. I will leave it in the hands of the super-expert users to implement this by a Logic-flowcard, similar to what you are showing. ---
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 16, 2024, 7:43pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/131 "2024-05-16T19:43:40Z")
Hi Mainnsto I think it looks exciting with the calculations you can now do, but how and where do you do it in Homey? I just canā€™t find the ā€œapps settingā€ that I think you mention in your text? Would you like to help me a little more along the way? Michael ---
**Author:** ![Mainnsto](https://avatars.discourse-cdn.com/v4/letter/m/ac8455/32.png) [@Mainnsto](https://community.homey.app/u/Mainnsto)\ **Post date:** [May 17, 2024, 12:30pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/132 "2024-05-17T12:30:02Z")
I made the calculations with a flow and the in-built logic-functions. First i made the numeric variables to store the number in, then i calculated them all in the same flow. These are so far proof-of-concept and require some extra work. Eg for small numbers (or sensor noise) in power calculation you can end up with very high COP šŸ™‚ Edit: For consumption i added the fan as a static 30W, i think its rated between 5W to 35W, so its not alot compared to compressor, however it should be set to 0W when it s not running. ---
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 17, 2024, 3:50pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/133 "2024-05-17T15:50:01Z")
@Gal_Carmeli I have tested a little a work today. And after about 1 hour Homey lost the connection to Alsavo. If I restart the Alsavo app itā€™s working again. I canā€™t still send diagnoses report šŸ¤Ø ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 17, 2024, 4:04pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/134 "2024-05-17T16:04:39Z")
@Michael_von_Barner - - Which app version do you have? - How did you determine that the connection was lost? - When the connection was lost, what was the value of the ā€œlast update timeā€ capability: ![WhatsApp Image 2024-05-16 at 15.31.06_7ba0bf5f](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/2/923268a407f4cf9bce9235f68cbf7286cd34b2b4.jpeg) ---
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 17, 2024, 4:44pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/135 "2024-05-17T16:44:46Z")
- Which app version do you have? V.1.0.4 - How did you determine that the connection was lost? and I know my flow has told it to stop, so itā€™s still running. then I can see when I go into the Homey app that it says that it is turned off (Homey thinks it is turned off) If I then try to turn it off manually from Homey, it does not respond. it is only when I restart the Alsavo app in Homey that a connection is made again and then I can switch it off via Homey - When the connection was lost, what was the value of the ā€œlast update timeā€ capability It says that it has been a few seconds since it was last updated ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 17, 2024, 5:20pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/136 "2024-05-17T17:20:25Z")
I am not sure it lost connectivity. In the ā€œlast update timeā€ is fresh (meaning, smaller than 5 minutes), it means that the app got a communication from Aslavo. Based on your description. it seems like the functionality of turn on/off doesnā€™t work properly. Next time it happens, please do the following: 1. Click on the Turn-On / turn-Off capability on the Homey app: ![](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/1/4/14a1aa6a6cc79a922a85d547df023cc7348a141c.png) 2. Open you Smartphone app, wait for 1 minute, and see if you action on the Homey0App is reflected on the Phone-app. For example, if you turned it Off on Homey, make sure on the Phone app that it was indeed turned off. Repeat that action a few times. Let me know what happened with this test. ---
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 17, 2024, 6:31pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/137 "2024-05-17T18:31:21Z")
I can only do that tomorrow after 12 But I have tried to do that action the other times and nothing happens in the Alsavo mobile app when I press on/off in the Homey app ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 17, 2024, 6:43pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/138 "2024-05-17T18:43:59Z")
And the ā€œlast update timeā€ was fresh? (less than 5 minutes old) ---
**Author:** ![Michael\_von\_Barner](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michael_von_barner/32/79082_2.png) [@Michael\_von\_Barner](https://community.homey.app/u/Michael_von_Barner)\ **Post date:** [May 17, 2024, 6:51pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/139 "2024-05-17T18:51:37Z")
Yes it was šŸ˜‰ ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 17, 2024, 7:13pm UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/140 "2024-05-17T19:13:46Z")
Then something is wrong with setting the values, but the connection is not lostā€¦ I must find a way to extract logs from your device. Let me sleep on it. ---
**Author:** ![Soren\_Mogensen](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/soren_mogensen/32/106373_2.png) [@Soren\_Mogensen](https://community.homey.app/u/Soren_Mogensen)\ **Post date:** [May 18, 2024, 7:29am UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/141 "2024-05-18T07:29:10Z")
I canā€™t seem to get mine to work right, I can turn it on in Homey by clicking on/off and via a flow, but itā€™s not reflected in the Alsavo App and pump stays off. Last update time shows secs. ago ---
**Author:** ![Gal\_Carmeli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gal_carmeli/32/80553_2.png) [@Gal\_Carmeli](https://community.homey.app/u/Gal_Carmeli)\ **Post date:** [May 18, 2024, 7:51am UTC](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819/142 "2024-05-18T07:51:04Z")
Great, so we have a reproduction of the issue. Can you please try again to turn on and off a few times, and immediately after send diagnostics-report? [Previous page](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819.md?page=6) [Next page](https://community.homey.app/t/app-pro-alsavo-heat-pump-for-swimming-pools/108819.md?page=8)