Why Do I Have No Hot Water?
No hot water can come from the power or fuel supply, controls, heating components, ignition system, or another water-heater fault. Homeowners can safely check the external breaker status on an electric unit or the visible pilot/ignition indicator and user controls on many gas units; internal electrical compartments should be left closed unless the person is qualified to work around line voltage.
- Completely cold water from every hot tap
- Pilot light is out (gas)
- Breaker tripped (electric)
- —Tripped breaker or blown element (electric)
- —Pilot out or failed thermocouple (gas)
- —Bad thermostat
- —Tripped ECO in the gas control valve
- ✓Electric: check the dedicated breaker from the electrical panel. If it trips again after one reset, stop and have the heater/electrical circuit evaluated.
- ✓Do not remove a standard electric water-heater access panel just to press an internal reset or adjust a thermostat; line-voltage components may be exposed behind the panel.
- ✓Gas: use the sight glass, display, and normal user controls described by the manufacturer. If you smell gas, leave the area and call the gas utility from a safe location.
If the pilot or ignition system will not operate normally, the breaker trips again, an error code persists, or the external checks do not restore hot water, professional diagnosis is appropriate. Internal electrical, gas-control, burner, and venting work should not be treated as routine homeowner troubleshooting.
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Reviewed by Paul Hall, Owner & Licensed Plumber
The Classic Plumber · Knoxville, TN · License #4268
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