GETI GWH02D 4000W MPPT solar inverter for PV water heating

The GETI GWH02D solar inverter is particularly suitable for use in systems for photovoltaic water heating.

Save costs and heat water using solar energy today. With the GETI GWH02D Solar Inverter, featuring automatic switching to the grid and the ability to independently set the water heating temperature from PV or AC, you can significantly reduce your hot water heating costs.

The GETI GWH02D 4000W MPPT inverter, developed for PV water heating, allows direct use of photovoltaic panel systems to power resistive heating devices, such as water heaters, heaters, heating mats, or heating coils. Additionally, the inverter is equipped with an AC input, allowing it to be connected to the mains power and heat water even when solar radiation is insufficient for heating.

Note: The GETI GWH inverter is only suitable for resistive loads with a bimetal thermostat (not suitable for electronically controlled thermostats!).
The inverter output (L, N) must not be connected to the electrical grid or grounded!

The system is simple, requiring only the connection of the appropriate number of photovoltaic panels with a maximum output of 4000W and an operating voltage of 160 ~ 350V DC, mains voltage of 230V AC, and connection to a resistive load, such as a heating coil, electric water heater, electric radiator, or underfloor heating and protective devices.

The direct current generated in the panels, which cannot be directly supplied to heating devices, is converted in the inverter to alternating current that can be used to power heating devices.

The maximum system power is 4000W. The inverter has a priority input from photovoltaic panels, and when this voltage drops below 120V, water heating will be powered by mains voltage 230V AC.

Product parameters:

- solar inverter for heating water using resistive load (heating coil, water heater)
- temperature sensor
- automatic switching between networks (PV / grid 230V AC)
- operating modes: PV only as an island system or PV + grid
- quiet operation ensured by passive cooling
- effective maximum power tracking on panels using MPPT
- high efficiency > 99%

The GETI GWH02D inverter is equipped with a clear LED display that informs the user about current and set values:

- indication of water heating from PV panels
- indication of water heating from the 230V AC grid
- water temperature (PV, AC) current and set
- PV power
- PV voltage
- operation indication
- error status indication


Technical parameters:

- input voltage (VDC): 160 to 350 (VDC)
- input voltage (VAC): 230 V AC
- output voltage [VAC]: 0-260 V AC (VAC)
- maximum power: 4000 W
- PV input current: 20A max.
- AC output current: 20A max.
- load type: resistive with bimetal thermostat (not suitable for electronically controlled thermostats!)
- the value of the resistive load must not be lower than 13 Ohm
- MPPT function: YES
- connection of PV panels: Series or series-parallel
- priority input: PV panels
- backup input: mains 230V AC
- working temperature: -25 °C ~ + 55 °C
- efficiency: > 99%
- temperature sensor length: 3m
- cooling: passive
- protection against short circuit at the input
- protection against overheating
- cooling: passive
- input connection of PV panels: MC4 connectors
- input connection 230V AC: screw terminal
- 230V AC output connection: screw terminal
- material: Aluminum
- degree of protection: IP65
- dimensions L x W x H [mm]: 255 x 201 x 95 mm
- weight: 3 kg

Packaging: 1 pc

Package contents: 1 pc Solar inverter GETI GWH02D 4000W