Here's a detailed list of the typical tasks a technician might perform to repair a temperature control issue in an electric geyser:

  1. Initial Inspection:

    • Verify the problem: Ask the customer about the symptoms, such as the geyser not heating water to the desired temperature, inconsistent temperature, or no hot water.
    • Check geyser settings: Ensure that the temperature setting on the geyser is correct and has not been altered unintentionally.

  2. Power Supply Check:

    • Inspect electrical supply: Ensure that the geyser is properly connected to the power source and is receiving the correct voltage.
    • Test the power switch: Verify that the geyser’s power switch and circuit breaker are working properly.

  3. Thermostat and Temperature Control Inspection:

    • Check thermostat settings: Inspect the thermostat’s settings to ensure it's correctly regulating the temperature.
    • Test the thermostat: Using a multimeter, the technician will check the thermostat for continuity. If the thermostat is faulty, it may need replacement.
    • Examine temperature sensors: Inspect the temperature sensor if the geyser has one. If it's malfunctioning, it can cause inaccurate temperature readings.

  4. Examine Heating Element:

    • Test the heating element: The technician will check the heating element for faults. If it’s broken or damaged, it will not heat the water properly.
    • Clean the element: If the element has mineral buildup (scaling), it may be cleaned to improve performance.
    • Replace the element: If the heating element is defective, the technician will replace it.

  5. Check for Faulty Wiring or Connections:

    • Inspect wiring: Check for any loose or faulty wiring, which could cause intermittent issues with temperature control.
    • Tighten or replace connections: Any corroded or faulty wires or connectors will be fixed or replaced to ensure proper operation.

  6. Check Safety Cut-off Mechanism:

    • Test the thermal cut-out: The thermal cut-out is a safety feature that prevents overheating. If this component is faulty, it could cause temperature issues. The technician will check and replace it if needed.

  7. Examine the Tank Pressure and Valve:

    • Inspect pressure valve: Ensure that the pressure relief valve is functioning properly to prevent overpressure, which can affect temperature regulation.
    • Check for leaks: Look for any water leakage around the geyser which could lead to temperature inconsistency.

  8. Calibrate Temperature Settings:

    • Recalibrate the thermostat: After testing, if the thermostat or temperature control is functioning properly but needs adjustment, the technician will recalibrate the settings to the desired temperature.

  9. Test the Geyser:

    • Run a test cycle: Once all repairs or replacements are done, the technician will run the geyser through a test cycle to ensure the water heats to the proper temperature.
    • Check for consistent heat: The technician will confirm that the water is being heated consistently and that the temperature control is working as expected.

  10. Final Inspection and Customer Feedback:

    • Explain the repairs: The technician will explain the repairs done and provide tips for maintaining the geyser and avoiding future issues.
    • Clean the area: After completing the repair, the technician will clean up any debris, ensuring the work area is safe and tidy.

  11. Record the Repair Details:

    • Log the repair details: The technician will log the repair work done, parts replaced, and any relevant observations to maintain service records for future reference.

This outline may vary depending on the specific geyser model, but these steps generally cover most temperature control issues in electric geysers.