What is the fault if the geyser supply is on but still the water is not heated?

If the geyser is not heating water despite the supply being on, several potential issues could be causing the problem:

1. Faulty Heating Element: The heating element inside the geyser might be damaged or burnt out. This is a common issue in electric water heaters. If the heating element is faulty, it will need to be replaced.

2. Thermostat Issue: The thermostat might be malfunctioning, preventing the geyser from heating water to the desired temperature. The thermostat regulates the temperature of the water in the tank. If it’s faulty, it may need to be recalibrated or replaced.

3. Power Supply: Ensure that the geyser is receiving power. Check the circuit breaker or fuse box to ensure that the circuit supplying power to the geyser is not tripped or blown. If there’s an issue with the power supply, it will need to be addressed.

4. Water Supply: Make sure there’s enough water in the tank. If the water level is too low, the geyser may not function properly.

5. Sediment Buildup: Over time, sediment can accumulate at the bottom of the tank, insulating the heating element from the water and reducing its efficiency. Flushing the tank to remove sediment buildup may solve the problem.

6. Wiring or Connection Issues: Inspect the wiring and connections to ensure everything is properly connected and there are no loose or damaged wires.

7. Faulty Gas Supply (for gas-powered geysers): If you have a gas-powered geyser, ensure that the gas supply is turned on and that there are no issues with the gas line or gas valve.

8. Faulty Gas Igniter (for gas-powered geysers): If the geyser is gas-powered and there’s no hot water, the igniter might be faulty and not lighting the gas burner. In this case, the igniter may need to be repaired or replaced.

If you’re unsure about how to diagnose or fix the issue, it’s best to contact a qualified plumber or technician to inspect and repair the geyser. Attempting to fix complex issues without the necessary knowledge and expertise can be dangerous and may cause further damage.