Marey Internal Water Leak

Marey water heater leaks water from the bottom of the unit.

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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

Loose plumbing connections, Cracked heat exchanger, Failed O-rings or gaskets on inlet/outlet fittings, Corroded internal piping

How to Fix / Troubleshooting

Safety first: Turn OFF power and close the water supply immediately to prevent electrical hazards and water damage.

Steps:

  • Identify leak source: Remove the front cover and use a flashlight to trace where water is originating. Dry the area and watch for new drips.
  • Tighten fittings: Carefully tighten any loose compression nuts or threaded connections on the cold inlet and hot outlet. Do not overtighten plastic fittings.
  • Inspect O-rings: Check for cracked or flattened O-rings on service valves, sensors, and flow meters. Replace as needed.
  • Check heat exchanger: If water appears to seep from the heat exchanger body or welds, the exchanger is likely cracked and must be replaced.

When to call a technician: For heat exchanger replacement or if you cannot safely access the leaking component.

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Repair Difficulty

Hard 4/5

Required Part

Heat Exchanger or Inlet/Outlet Fittings and O-Rings
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