Pool Heater Electric Spa Heater Electric Heating and fit for Thermostat Pool Heat Pump</br>Note:You must wire this item yourself.</br>1. Check the circulation system first before turn on the heater</br>2. Never disassemble the heater when connecting to power supply</br>3. Never turn on the heater without water</br>4. No power switch is designed for the heater. The front panel switch can only turn off the controller, thus you should cut off the main power supply before performing maintenance or repair</br>5. Proper grounding is important</br>6. Start the circulation pump for at least 2 minutes before turn on the heater, and turn off the circulation pump at least 2 minutes after turn off the heater</br>7. Once unexpected high temperature 60??140??occurs, the temperature switch cuts off the system. You need to cut off the main power supply, resolve the fault and wait the temperature to fall below normal temperature, then press the 'Reset' button to restart the heater</br>Feature</br>Sensor technique are:</br>A. The flow-temperature sensor is always under the control of software, accurately monitoring the temperature status of the whole system, and then adjust the settings to maintain the water temperature and protect the heater from unexpected situations;</br>B. No mechanical sensors, avoid any mechanical failure to affect the function of the heater;</br>C. Avoid affection of ion accumulation to mechanical sensors;</br>D. Greatly reduce unnecessary circulation cycles, prolong the life of circulation pumps and save more energy.</br>Intelligent self-diagnose function: The control system keeps on monitoring the running status of every parts of the heater, and quickly reacts and displays corresponding hint message for any incident, so as to avoid any damage or malfunction happens</br>Package List</br>1 x Pool Heater</br>2 x Interface</br>