digital water pump contoller

1 contains 5temperature sensors 2 5 controlling output 3 Double temp sensor protection 4 1 alarm signal input

Main function and Technique index

The controller is the special controller for heat pump water heater, it contains five temperature sensors (water temperature, defrost temperature, exhaust temperature, backwatertemperature and display temperature) , four controlling output(compressor, defrost fan and circulating pump) one alarm signal input (used for high and low pressure protection).

Main function as below:

1. Temperature Display and Controlling : It can display every sensor’s temp, and it can also control the temperature of water in water tank at the set  temperature.

2. Auto Defrosting Controlling :It has defrosting controlling logic of heat pump optimization design, and can defrost effectively in order to ensure that the outdoor machine can run normally even at low temperature.

3. Exhaust temperature protection: When the exhaust temperature is too high, the controller protection: turns off the unit and generates alarm signal, and it can control the outdoor fan according to the exhaust temperature.

4. Circulating pump and freeze protection: circulating pump starts 30 seconds earlier and stops 60 seconds later than compressor .When compressor is off or in heat preservation condition, and backwater temperature is lower than setting temp (F16) for 5 seconds, circulating pump is off for 30 minutes, circulating pump starts working for 1 minute. If backwater temp is still lower than setting temp, start compressor and fan until backwater temp is higher than setting temp(F17), then turn them off.

5. External alarm: one external switch valve alarm signal input, it can be set to 3 modes: always open, always closed or forbidden, and you can set the times and time of the auto recovery.

6. Running in different period of time: The controller has two modes: “Auto” and “Econ”, in “Econ” mode, the controller can set 3 periods of time, it can only heat in these periods of time.

7. Double temp sensor protection in water tank: tank sensor can replace display sensor, that is to say, if one sensor is broken, controller will choose the other one to control automatically.

8. Others: Water tank sensor use double sensor. Real Time Clock, On-off State Memory when the power is off (adjustable), Direction of Others:cross valve can be set, Compressor start delay protection, Sensor Error Alarm, High Temperature Alarm, Add Fluorin, Test and so on.

Main Technique Index:

Range of Temperature Display: -50~150°C

Range of Temperature Set: 0~100°C

Power Supply: 220V±10% AC

Operation Environment:Temperature -10°C~50°C,humidity ≤85%.

Output Load Capability: Compressor 10A/250VAC,Others 2A/250VAC

Temperature Sensor Type: NTC R25=5kΩ,B(25/50)=3470K

Executive standard: Q/320585 XYK 01

 production process

digital water pump contoller