Huawei + CTC

What Zerofy can do with Huawei and CTC

In practice

• Hot water is the simplest heat store: Autopilot can use the hot-water boost of your CTC heat pump to heat water in hours with surplus.
• A heat pump draws roughly 1–3 kW while running, which a typical Huawei home system (2–10 kW) can cover on sunny days.
• Zerofy gets new Huawei data every 5 minutes. Heat pumps shouldn’t switch often, so set a minimum runtime in Autopilot.
• Zerofy also shows your Huawei battery, so you can see whether surplus goes into the battery or into the heat pump.
• If you use CTC’s own spot-price control in myUplink, its “Blocking” at high prices can lower the hot-water setpoint; check that the CTC price limits and Zerofy’s Smart mode don’t pull in opposite directions.

What Huawei and CTC offer on their own

Huawei: The SmartAssistant (EMMA) switches one SG Ready heat pump directly through its DO dry contacts or an external relay, and a second one through a Shelly. It also controls Vaillant aroTHERM plus via EEBUS and the Askoheat+ heating rod via Modbus TCP.

CTC: CTC controllers have SmartGrid inputs (terminals K22–K25, a SmartControl wireless accessory or BMS): when an inverter or energy manager closes both contacts (“SmartGrid Overcapacity”), the controller raises the room/flow setpoint by 1–5 °C and the hot-water setpoint by up to 30 °C. Through myUplink, CTC can also download spot prices and switch between “Low price” and “Blocking” on its own.

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

Setting up Huawei and CTC in Zerofy

1. Connect Huawei

Zerofy connects to Huawei FusionSolar with the login of a FusionSolar owner account; the older Northbound API account still works as a legacy option.

1. Check that your FusionSolar account has a verified email address (System → Personal Settings).
2. Make sure it is an Owner account; if you only have an installer or company account, invite a new user with the role Owner in the FusionSolar app.
3. Add Huawei FusionSolar in Zerofy, choose the FusionSolar login and enter the owner account’s credentials.

Good to know: Installer and company accounts don’t work, and the owner invitation can only be sent from the FusionSolar smartphone app, not the web portal. If you use the legacy Northbound API, create a dedicated account for Zerofy, because sharing it with other services can cause data gaps.

Step-by-step guide for Huawei

2. Connect CTC

Zerofy reaches CTC heat pumps through the myUplink cloud, the same connector used for NIBE, with your myUplink login; Autopilot controls the hot-water boost.

1. Connect the heat pump to the internet and register it in the myUplink app.
2. Make sure your myUplink account has the subscription needed for remote control.
3. In Zerofy, connect myUplink and log in with your myUplink credentials.
4. Enable Autopilot (Solar or Smart mode) for the hot-water tank.

Good to know: Zerofy steers only the hot-water boost on CTC units, not room or flow temperature.

3. Turn on Autopilot

In Zerofy, open your CTC 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 CTC 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 Huawei solar production.

Learn more about Smart Mode

About Huawei and CTC

Huawei – Chinese manufacturer (Huawei Digital Power, Shenzhen). Homes typically have a SUN2000 hybrid inverter, either the single-phase L1 (2–6 kW) or the three-phase M1 (3–10 kW), with a LUNA2000 battery, plus optional optimizers and the SmartGuard backup box. Monitoring app: Huawei FusionSolar.

CTC – CTC is a Swedish heat pump maker from Ljungby. Its air-to-water, ground-source and exhaust-air heat pumps and EcoZenith indoor modules are controlled remotely through the myUplink app. Products: CTC EcoAir, CTC GS/GSi 600, CTC EcoZenith i255/i360/i555 Pro, CTC EcoPart i600M, CTC EcoVent i360F, CTC EcoLogic L/M.

Manufacturer information last checked: October 2026.

All devices that work with Huawei