Hoymiles + PHNIX

What Zerofy can do with Hoymiles and PHNIX

In practice

• Autopilot isn’t available for PHNIX yet, so Zerofy won’t run your PHNIX heat pump on solar surplus automatically. You can see Hoymiles production and PHNIX in one app and adjust the room temperature and flow temperature from there.
• Because Zerofy does not run PHNIX units on surplus automatically, put the heating or pool-heating window into the middle of the day with a schedule; pool heat pumps run mainly in summer, when midday PV output is highest.

What Hoymiles and PHNIX offer on their own

Hoymiles: On the three-phase HiOne all-in-one storage system (G3), Hoymiles has a dry contact (DO1) for SG Ready heat pumps, but the manual (January 2026) lists heat pump control as “coming soon”. Hoymiles microinverters have no heating control.

PHNIX: PHNIX’s “PV Ready” function lets the heat pump adjust its compressor frequency to the available solar power, controlled by a home energy manager or, if there is none, by PHNIX’s own Smart Meter. A “Spot Time” mode works with grid prices (target temperature, maximum frequency, six daily timers), and the Heco series also has an SG Ready interface.

Zerofy connects the two: it reads Hoymiles production and controls your PHNIX heat pump to match, together with your other devices in one app.

Setting up Hoymiles and PHNIX in Zerofy

1. Connect Hoymiles

Zerofy connects to the Hoymiles S-Miles Cloud with your S-Miles account and reads your PV production.

1. If your installer hasn’t set up your plant yet, register it in the S-Miles Installer app (use DIY mode if you install it yourself).
2. In Zerofy, add an inverter, choose Hoymiles and log in with your S-Miles credentials.
3. Use Autopilot (Solar Mode) to switch devices on solar surplus.

Good to know: Zerofy reads PV production only from Hoymiles, not grid meter or battery data, and stores the power history in 15-minute steps (5 minutes for most other brands).

Step-by-step guide for Hoymiles

2. Connect PHNIX

Zerofy connects to the PHNIX cloud with your PHNIX app login and shows the heat pump’s live status; you can set the room temperature and the water circulation temperature from Zerofy.

1. Connect the heat pump to the internet and register it in the PHNIX app.
2. In Zerofy, add PHNIX and log in with your PHNIX account credentials.

Good to know: Zerofy’s Autopilot does not yet run PHNIX heat pumps on solar surplus or dynamic prices; control from Zerofy is manual or by schedule.

Step-by-step guide for PHNIX

About Hoymiles and PHNIX

Hoymiles – Hoymiles (Hangzhou, China) is one of the largest microinverter makers. In Europe it is best known for balcony systems such as the HMS-800W-2T (switchable 600/800 W) with the MS-A2 balcony battery, and it also sells HYS/HYT hybrid inverters with home batteries. Monitoring app: S-Miles Cloud (S-Miles app).

PHNIX – Guangdong PHNIX Eco-energy Solution Ltd. is a Chinese heat pump manufacturer based in Guangzhou (Nansha), founded in 2002. It makes air-to-water heat pumps for heating, cooling and hot water, hot-water heat pumps and swimming pool heat pumps, and exports about half its products, including to Europe. Products: Air-to-water heat pumps (Everest, Heco, GreenTherm Pro R290, HeatGreen), airExpert R290 all-in-one hot-water heat pump, full-inverter swimming pool heat pumps.

Manufacturer information last checked: October 2026.

All devices that work with Hoymiles