How to Fix / Troubleshooting

Safety first: Turn off power and stop the pump before working on any leaks. Water and electricity are a dangerous combination.

Identify leak source: Dry the area and observe where water first appears: unions, sensor ports, element glands, or seams.
Tighten unions: Hand-tighten the plastic unions on the inlet and outlet. Do not overtighten as this can crack fittings.
Replace O-rings: If unions or sensor plugs are leaking, remove them, inspect O-rings, and replace with Elecro-specified seals. Lubricate lightly with silicone grease.
Check for freeze damage: Look for cracks in the flow tube or manifold. Cracked components must be replaced; repair is not reliable.

Do not operate the heater with active leaks, as this can cause electrical hazards and internal corrosion.

Heater is leaking water from the base or around pipe connections.

Possible Causes