TSUN + Nibe

What Zerofy can do with TSUN and Nibe

In practice

• Hot water is the simplest heat store: Autopilot can use the hot-water boost of your Nibe heat pump to heat water in hours with surplus.
• A heat pump draws roughly 1–3 kW while running – more than many small TSUN systems (typically 0.8–3 kW) produce, so solar covers only part of its consumption.
• Zerofy gets new TSUN data every 5 minutes. Heat pumps shouldn’t switch often, so set a minimum runtime in Autopilot.
• Leave the normal hot-water comfort mode at a moderate level so the tank has headroom; a boost triggered on surplus then stores midday solar as hot water for the evening. EME 20 is not needed for this, since Zerofy reads the surplus from your inverter’s cloud.

What TSUN and Nibe offer on their own

TSUN: TSUN has no heat pump or heating-rod control in its product range.

Nibe: NIBE’s own PV solution is the EME 20 communication module for S-series units (S1155, S1255, SMO S40, VVM S320/S325). It reads the inverter over RS485 Modbus RTU (SunSpec) and, under menu 4.2.2 “Solar electricity”, lets the heat pump raise room, hot-water or pool temperature when there is surplus; with an extra energy meter household consumption can be prioritised.

Zerofy connects the two: it reads TSUN production and controls your Nibe heat pump to match, together with your other devices in one app, with dynamic tariffs and forecast-based Smart mode.

Setting up TSUN and Nibe in Zerofy

1. Connect TSUN

Zerofy connects to the TSUN cloud with your TSUN Smart login and reads your inverter data.

1. Register your system in the TSUN Smart app.
2. In Zerofy, add an inverter, choose TSUN and log in with your TSUN Smart credentials.

Good to know: Only TSUN Smart accounts work (inverter IDs starting with Y); TSUN Home accounts are not supported. Battery and meter data are only partly available, depending on the system.

Step-by-step guide for TSUN

2. Connect Nibe

Zerofy connects to the myUplink cloud API with your myUplink login (OAuth) and shows the heat pump as a Space Heating and a Hot Water Tank device; Autopilot controls the hot-water boost.

1. Register the heat pump in myUplink and make sure it is online.
2. Activate a myUplink Premium subscription for the system.
3. In Zerofy, add Nibe and log in with your myUplink credentials.
4. Enable Autopilot (Solar or Smart mode) for the Hot Water Tank.

Good to know: Without a myUplink Premium subscription the API access does not work. Zerofy currently steers only the hot-water boost; flow-temperature control is not available yet.

Step-by-step guide for Nibe

3. Turn on Autopilot

In Zerofy, open your Nibe heat pump, turn on Autopilot and choose Solar – or Smart to also use dynamic tariffs and forecasts. Set the priority, activation threshold and minimum runtime.

Dynamic tariffs

Zerofy can also run your Nibe heat pump on dynamic electricity prices (EPEX Spot or Nord Pool, e.g. Tibber or aWATTar) or on a fixed time-of-use tariff. Smart mode combines those prices with forecasts of your household consumption and your TSUN solar production.

Learn more about Smart Mode

About TSUN and Nibe

TSUN – TSUN (TSUNESS Co., Ltd., Suzhou, China, with a German office in Frankfurt) makes microinverters from 300 W single units to 3.3 kW 6-in-1 units. In Europe it is mainly found in 800 W balcony systems such as the TSOL-MS800, often combined with TSUN balcony storage (MSU2000, MSU4000Elite). Monitoring app: TSUN Smart.

Nibe – NIBE is a Swedish heat pump maker (Markaryd). Homeowners typically have a ground-source S1155/S1255, an air-to-water heat pump with an SMO or VVM indoor unit, or an exhaust-air F730/F750, all connected to the myUplink cloud. Products: S1155, S1255, S2125 with SMO S40 / VVM S320, F-series (F1155, F1255, F2120, F730, F750).

Manufacturer information last checked: October 2026.

All devices that work with TSUN