Fairland Hydraulic Restriction Through Heater

Water flow through the heater seems restricted; pressure at pool returns is lower when heater is in circuit.

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

Partially closed isolation valves, Debris caught in heater inlet strainer (if fitted), Internal blockage in titanium heat exchanger, Incorrectly adjusted bypass valve

How to Fix / Troubleshooting

Safety: Turn off pump and heater before adjusting valves or opening any strainers.

Steps:

  • Valve positions: Confirm inlet and outlet valves to the Fairland heater are fully open.
  • Bypass adjustment: If a bypass is installed, adjust it to allow adequate flow through both the heater and the bypass line.
  • Check strainers: Clean any strainers or filters installed just before the heater.

If restriction remains:

  • A technician should inspect the titanium heat exchanger for internal scaling or debris.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Titanium Heat Exchanger / Inlet Strainer
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements