Fault 1: sudden trip under normal heating: the probe of the heating pipe and the temperature-sensitive switch directly conducts heat through metal. Too fast or too high heat conduction will cause misoperation. Treatment: Pull the probe of the temperature-sensitive switch out of the bottom of the blind tube for about 40mm to cut off the power supply, and set the multimeter to the maximum gear of 20M? Resistance gear; Then connect the two probes to the heating pipe shell and any power supply terminal respectively. If the cold insulation resistance is greater than 5? The heating pipe needs to be replaced; The insulation performance of heating pipe decreases (generally after a period of use), and its insulation resistance value is unstable. When the leakage current exceeds a certain value, the leakage protection plug will act immediately: check to eliminate or replace the heating pipe; Treatment of leakage between other live parts and shell: check and eliminate or replace parts; The leakage protection plug has poor contact with the inferior socket, which leads to misoperation due to overheating. Treatment method: replace the socket; Troubleshooting of leakage protection plug and temperature switch: replace temperature switch or leakage protection plug.
Fault 2: No water leakage when not heated, but no water leakage when filled with water. Cause analysis: the shell of the heating pipe burns through and leaks, resulting in water leakage. Solution: Replace the heating pipe.
Fault 3: the heating indicator is on, but it cannot be heated;
Treatment of poor contact or broken wire at the plug end of heating pipe: check and eliminate; Treatment of heating pipe burning: replace the heating pipe.
Fault 4: the heating indicator light is not on, so it is impossible to heat. The insertion end of the thermostat is in poor contact or disconnected. Treatment: check and eliminate;
Temperature controller burning treatment: replace the temperature controller.
Fault 5: the indicator light of the water heater never goes out: there are few contact points between the temperature sensing surface of the thermostat and the flange surface of the electric heating pipe. Treatment: Reinstall the thermostat to make the temperature sensing surface contact.
Fault 6: there is no heat preservation function, and it has been heated until it trips: the working temperature of the thermostat is too high or it has been blown and shorted. Treatment: Replace the thermostat.
Fault 7: heating time is too long: the water heater does not use the maximum power gear to heat (electric water heater with power conversion function). Handling: Turn the power transfer switch to the maximum power range; Treatment of electric heating tube failure: replace electric heating tube.
Fault 8: It has been kept in the heat preservation state and cannot be heated again. The thermostat can't be reset, and it has been in an open circuit state. Replace thermostat.
Fault 9: Water drops from the small hole of the safety valve during the heating process of the water heater: Because the electric water heater belongs to the closed water storage type electric water heater, the water pressure in the inner container of the water heater is greater than 6Mpa during the heating or heat preservation process, so that the one-way safety valve overflows and drips. Treatment: close the water inlet valve and adjust the knob of the water mixing valve to high temperature to avoid water leakage from the one-way safety valve and make water drip from the shower; If the water mixing valve is not installed, the ball valve at the hot water outlet can be opened a little, and the running water can be placed here, which can also avoid the one-way safety valve from leaking.
Fault 10: the heating indicator light is not on, but it can be heated normally: the indicator light is poorly connected or disconnected.
Fault 1 1: There is no heat preservation function, and it has been heated until the temperature trips: the working temperature of the thermostat is too high or it has melted and shorted. Solution: Replace the thermostat.
Fault 12: It has been kept warm and cannot be heated again; The thermostat can't be reset, and it has been in the open circuit state; Solution: Replace the thermostat.
Trouble 13: Long heating time: It takes about 2 hours to heat the water heater to the highest water temperature of 750C when it is used for the first time (or stopped for a period of time). The water heater does not use the maximum power gear for heating (electric water heater with power conversion function).
The electric heating tube is broken Solution: Turn the power switch to the maximum power position or replace the electric heating tube.
Fault 14: safety valve orifice outflow: tap water pressure is too high, exceeding 0.7 MPa (safety valve pressure relief). The steam pressure in the heater is greater than the relief pressure of the safety valve, and a small amount of water is discharged. The thermostat is broken, which keeps the water heater in a heating state.
Solution: Install a pressure reducing valve before the water inlet of the water heater, or open the water outlet, or replace the thermostat.
Fault 15: the leakage protection indicator light is not on; the pole base is out of power or has poor contact. The water heater has no water (or is not filled), the electric heating tube is in a dry state, and the reset button of the leakage protection plug jumps up to cut off the power supply. When the water temperature of the water heater is too high, the reset button of the leakage protection plug pops up to cut off the power supply. The water heater leaks electricity, and the reset button of the leakage protection plug jumps up to cut off the power supply.
Treatment: check whether there is electricity with an electric pen, and whether the contact between the leakage protection plug and the socket is good. Fill the water heater with water according to the instructions, and then press the reset button of the leakage protection plug, even if it can return to normal. The thermostat is broken. Replace thermostat.
The electric heating tube is damaged. Replace electric heating tube. Check whether there is electric leakage with an electric pen. If there is leakage, use an electric pen to find out the leakage part and try to eliminate it.