Jan 06, 2025
Before starting any installation, make sure to disconnect the power supply to the water heater to avoid any electrical hazards.
If replacing an existing thermostat, carefully remove the old unit from the water heater.
Disconnect the wires from the old thermostat, making a note of the connection points for proper installation of the new thermostat.
Mounting: Install the thermostat in the designated compartment of the water heater. Ensure it is securely mounted.
Wiring: Connect the wiring to the terminals on the thermostat. Typically, you'll connect the power wire to the "Live" terminal and the ground wire to the "Ground" terminal. Double-check that all connections are tight and secure.
Adjust the thermostat to the desired temperature. Most Jaye KST thermostats allow for easy temperature adjustment through a dial or digital interface.
The typical temperature range for water heaters is 40°C to 75°C (104°F to 167°F), but you can adjust it according to your needs.
After installation, restore the power to the water heater.
Test the thermostat to ensure it activates and deactivates the heating element as the water temperature rises and falls.
Manual Adjustment: Turn the dial or adjust the digital settings to select your desired temperature.
Preset Temperatures: Some models come with preset temperature ranges for different water heating needs (e.g., for showers or washing machines).
Once the desired temperature is set, the thermostat will automatically control the heating element:
It will activate the heating element when the water temperature is below the set level.
Once the desired temperature is reached, it will cut off the power to the heating element, preventing overheating.
It will reactivate the heating element if the temperature drops below the set threshold.
Overheat Protection: If the water temperature exceeds safe limits (e.g., above 85°C), the thermostat will cut off the power to prevent damage to the heater or potential hazards.
Manual Reset: In some cases, if the thermostat shuts down due to overheat, you may need to manually reset it by pressing the reset button.

Temperature Settings: Periodically check that the thermostat is still set to the desired temperature.
Connection Inspection: Ensure all electrical connections are intact and there are no signs of wear or corrosion.
No Heating: If the water heater isn't heating, check if the thermostat is properly connected and the settings are correct.
Overheating: If the water temperature exceeds safe levels, verify the thermostat's cut-off mechanism is functioning. A faulty thermostat may need to be replaced.
Erratic Temperature Control: If the thermostat is not maintaining a steady temperature, check for issues like wiring faults or sensor problems.
Using the Jaye KST thermostat in water heaters is straightforward, with a focus on precise temperature control and safety. By following the installation steps and setting the thermostat to your preferred temperature, you can enjoy consistent and efficient water heating. Regular maintenance ensures the thermostat continues to function optimally.
Would you like more details on any specific part of the process or troubleshooting tips?
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