Laars Relief Valve Discharge

Water is dripping from the pressure relief valve discharge pipe.

Advertisements

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.

Advertisements

Possible Causes

System pressure too high, Failed or waterlogged expansion tank, Faulty pressure reducing valve overfilling system, Debris under relief valve seat

How to Fix / Troubleshooting

Safety first: Discharged water may be very hot. Keep clear of the discharge outlet and allow the system to cool before touching piping.

  • Check pressure gauge: If pressure is near or above 30 psi, the relief valve is doing its job. Do not cap or plug the discharge.
  • Inspect expansion tank: As described earlier, check if the tank is waterlogged and consider replacement by a professional.
  • Check fill valve: If pressure rises when the system is cold, the fill valve may be feeding too much water. Close the manual shutoff to the fill valve temporarily and monitor pressure.
  • Cycle relief valve (advanced): A trained person may briefly lift the relief valve test lever to flush debris, but if it continues to drip, replacement is needed.

When to call a professional: Relief valve or expansion tank replacement and pressure control diagnosis should be done by a technician.

Advertisements

Repair Difficulty

Medium 3/5

Required Part

Pressure Relief Valve
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements