dy
Wellis
Persistent Dry Condition Lockout
Display shows dy or DY after dr, spa remains shut down
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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
Repeated dry fire detection, Severely restricted flow, Damaged heater element, Control logic lockout after multiple dr events
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker. Do not repeatedly reset a dry fire condition without correcting the cause.
- 1. Resolve underlying dr issues:
- Follow the steps for the dr error to restore proper water level and flow.
- 2. Allow system to cool:
- Let the spa sit powered off for at least 15–20 minutes to cool the heater.
- 3. Power reset:
- Turn breaker ON and see if dy clears.
- 4. Inspect heater:
- With power OFF, remove heater unions and inspect for signs of burnt or deformed heater tube.
- If the heater has been dry‑fired, replace the heater assembly.
- 5. Technician evaluation:
- If dy returns after correcting flow and replacing the heater, the control pack may require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Heater Assembly
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