dY
QCA Spas
Persistent Dry Heater Condition
Display shows dY or DY, spa may shut down heater and display a dry heater warning.
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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.
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Possible Causes
Heater running without water, Severely restricted flow, Heater element damage, Control pack sensing dry condition
How to Fix / Troubleshooting
Safety: Turn off power at the breaker. Do not run the heater without confirmed water flow.
- Inspect heater tube: Open the equipment bay and inspect the stainless heater tube for discoloration or bulging, which indicates overheating.
- Restore proper flow: Clean or replace filters, bleed air from pump and heater unions, and ensure all valves are open.
- Test heater element: With power OFF and wires removed from the heater terminals, measure resistance across the element with a multimeter. Replace the heater assembly if the element is open or shorted to ground.
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Repair Difficulty
Hard
4/5
Required Part
Heater Assembly
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