Energy Kinetics Overpressure / Expansion Tank Failure

Boiler pressure rises significantly when heating and may approach or exceed relief valve setting.

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.

Possible Causes

Waterlogged expansion tank, Overfilled system, Faulty pressure reducing valve, Blocked expansion tank connection

Safety: High pressure can cause relief valve discharge. Allow system to cool before working on it.

1. Check pressure cold vs hot: Note boiler pressure when cold and when hot. A large swing suggests expansion tank issues.
2. Inspect expansion tank: If it has an air valve, a technician can check and recharge the air side. Do not release water from the tank while hot.
3. Verify fill pressure: Ensure the automatic fill valve is not over-pressurizing the system.

Expansion tank replacement or recharging is best handled by a heating professional.

Medium 3/5

Expansion Tank

Check Price on Amazon

We may earn a commission from links on this page.