CTC
Thermocouple / Flame Sensor Failure
CTC gas water heater pilot will not stay lit (standing pilot models)
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Weak thermocouple, Loose thermocouple connection at gas valve, Drafts blowing out pilot, Faulty gas control valve
How to Fix / Troubleshooting
Safety first: Turn off gas before replacing any pilot components. Follow lighting instructions exactly.
Steps to check:
- Ensure the pilot flame is properly adjusted and engulfing the thermocouple tip.
- Tighten the thermocouple connection at the gas control valve.
- Replace the thermocouple if the pilot still will not stay lit.
- If a new thermocouple does not solve the issue, the gas control valve may be defective and should be replaced by a professional.
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Repair Difficulty
Medium
3/5
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