Jandy
Internal Water Leak
Heater leaks water from the bottom of the cabinet.
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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
Cracked heat exchanger, Leaking header gasket, Loose plumbing unions, Condensate misidentified as leak
How to Fix / Troubleshooting
Safety first: Turn off power and gas. Do not operate a leaking heater.
- Identify source: Remove the front panel and carefully inspect around the header, heat exchanger, and plumbing unions for active drips.
- Check unions: Tighten inlet and outlet unions by hand, then slightly with a wrench if needed. Do not overtighten plastic fittings.
- Header gaskets: Look for water seeping from the header-to-exchanger joint. If leaking, replace header gaskets.
- Heat exchanger: If water is leaking from inside the exchanger tubes or combustion chamber, the exchanger is likely cracked and must be replaced by a professional.
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Repair Difficulty
Professional Required
5/5
Required Part
Heat Exchanger
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