Display shows Prr or PR, spa may not heat and pumps may be limited.

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

Faulty pressure switch in heater circuit, Low water flow through heater, Misadjusted pressure switch, Wiring issue to pressure switch

Safety first: Shut off power at the GFCI breaker.

Locate pressure switch: On some Dynasty Spas, a pressure switch is threaded into the heater manifold or plumbing.
Inspect and reseat wires: Ensure the two wires to the pressure switch are firmly attached and not corroded.
Check flow: Clean the filter and verify that the circulation pump is providing strong flow.
Replace pressure switch: If Prr persists with good flow, replace the pressure switch with a compatible Dynasty Spas part, adjusting it per manufacturer instructions if adjustable.

Medium 3/5

Heater Pressure Switch

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