Swimming Pool & SPA Hot Tub Electric Water Heater Thermostat. Note:This item only support 220V. The pool heaters are special used for small pool no more than 2CBM. This thermostat is specifically designed for the hot tub, the thermostat is installed in the pipeline jacuzzi. When adding hot water bath, start the pump, the thermostat automatically heat insulation work, so the water temperature bath maintained at 39 degrees Celsius, give your Jacuzzi to create a more comfortable environment. Thermostat operation is fully automated, clockwise, the heating is on, indicator light, temperature reaches a preset temperature, will remain at that temperature. Initial testing of the temperature setting. Heaters are equipped with high-temperature protector to protect the user against the hazards of excessive heat including hyperthermia. However, the user should check the proper functioning of the heater after installation, before the first use to ensure a safe operation. Check by filling the tub to the appropriate level and turn the system on. Let the system run with the heater on until the temperature stabilizes at the maximum level and the heating-up indicator light goes off. Measure the water temperature with an accurate thermometer. Water temperature should be 40 (140). However, since the water temperature regulating devices may have a tolerance, your measured temperature may be slightly lower or higher than the preset 40 (140) level. If the variance is more than ±3 (±5), contact your supplier for remedy. The operation of the Heater is fully automatic. When installed properly it will turn ON after user have set the temperature by turning the controlling switch clockwise, then the heating-up indicator turns on. As long as the heater is on, it will heat up the water to the user-set level and maintain the temperature. User can turn the controlling switch anticlockwise to a temperature lower than the current water temperature to turn OFF the heater, and the heating-up indicator turns off. There is no separate heater controller for user. The 230V3kW or 230V2kW Heater is designed to efficiently maintain the water temperature of a standard bathtub at the preset level of 40 (104). However, if starting with cold water, the Heater will increase the temperature at a rate of 6 to 8 (11 to 14) per hour, depending on the initial water temperature, the room temperature, and the size of the bathtub. Once turned ON the Heater stays ON until the temperature reaches the preset temperature, and then it will turn OFF automatically. It will stay OFF until the temperature drops a few degrees below the preset value, then it will turn back ON. The heater continues this ON/OFF cycle for as long as the pump is ON. The indicating lamp is located marks HEATER place. High temperature protection/rest button. In addition to the regulating thermostat, the Heater is equipped with a manual reset High Temperature Protector to protect the user against the hazards of high temperatures. In the event of water or the heater enclosure reaching temperatures of higher than 49(120) because of blockage or other reasons, the High Temperature Protector will trip(interrupt power) immediately. In order to reset, let the water cool down to approximately 38 (100), then simply push the RESET BUTTON on the top panel. The heater should resume operation in the normal manner. The Heater is equipped with a pressure-sensing switch that protects the heater against the hazard of running the system without water. If the water level is low at the beginning or drops low during the operation water pressure is lower than 20kPa (about 2000mmHO2) the pressure sensing switch will interrupt power. Heater can only come ON when the water is at the appropriate level (water pressure is above 20kPa) and the water pump is running. Swimming Pool and Spa Heater ×1. ECheck Issues: Payments via eCheck do not clear immediately. Usually you will wait 5-7 days after checkout for it to clear. Orders are processed from Monday-Friday; Not on the weekends & public holidays. We will work with you to get the case resolved in the fastest method. Hope for your understanding. Please contact with us at first for more details. Defective & Damaged Products If product was received damaged or not as described, please send us some pictures or videos, so we could well understand your problem, then solve them for you ASAP. Besides, it’s much helpful for us to claim with UPS, remind our related department to pay much more attention to packaging later on. If an item is received damaged, customer service must be contacted within 7 days of receiving your item. The item “3KW 220V Water Heater Thermostat for Home Swimming Pool & SPA Fast Shipping” is in sale since Sunday, February 05, 2017. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Heaters & Solar Panels”. The seller is “asc365usa” and is located in Hayward, California. This item can be shipped to United States.