... and Technique IndexThis is a solar heat pump water heater controller, with four-way temperature sensor, including water ... , six-way controlling output(compressor, defrosting, fan, water magnetic valve, pipeline cycle pump, the electric heating belt ... Compressor 10A/250VAC, Others 2A/250VACTemperatureSensorType: NTC R25=5kΩ,B(25/50)=3470KExecutive standard: Q/320585 XYK 01 pictures air source water pump ...