Reheat Smart – PV to Heat controller


The Reheat smart PV to Heat controller allows you to connect up to 2,000 Watt op Photovoltaic panels to your current/existing electric water heater. This allows you to save the sun for later and convert your water heater to a heat battery.



The Reheat smart controller offers you full control over your water heating costs with a plug-and-play design to connect solar photovoltaic panels that generate electricity, directly to your existing water heater.


  • No plumbing changes required
  • No electric element changes
  • No Infrastructure changes
  • Plug-and-Play design


  • Touch screen interface
  • Digital timer settings for optimal flexibility
  • Digital temperature display
  • Integrated PV safety fuse
  • Integrated PV disconnection breaker
  • Integrated AC disconnection breaker
  • Instant override function for maximum user comfort


Enclosure Ingress rating IP50
Enclosure Coated Mild Steel enclosure
Suitability Installation in a roof or protected electrical environment
Humidity 10-90% RH (no dew condensation)
Temperature -20°C to +55°C
Standard IEC 60669-2-1:2009
Power supply 200-240V 1ph 50/60Hz; up to 4kW geyser feed through; 11VA burden



Solar PV supply (PV IN)

– PV panel string not exceeding a total of  2000W

– same specification for each panel in the string

– PV panels in a series-only connection

– PV string Maximum PV Voltage and Maximum PV Current must not exceed the specifications below

Maximum PV Voltage 240Vmp (Max 300VOC  (i.e. total series connected open-circuit PV panel voltage)
Maximum PV Current 17A (i.e. total connected short-circuit PV panel current)

System protection

-PV DC supply short-circuit protection

-Integrated inline PV fuse

-Integrated PV breaker

-Integrated Transfer breaker

– NO Reverse Polarity Protection


Touch Screen Interface

–   Green Temperature Display: Powered by Solar

–    Red Temperature Display: Powered by AC

-Black Temperature Display: Not currently powered

-3.5” Colour Touch LCD + Li-ion battery backup


Additional information

Weight 5 kg
Dimensions 21 × 8 × 33 cm