DY
Arctic Spas
Dry Heater Lockout After Repeated Dry Condition
Display shows DY or DRY YET, often following a DR code; spa may lock out heater.
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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 low-flow or dry-fire detection, Severely restricted filter, Persistent air lock in plumbing, Failing circulation pump or blocked heater manifold
How to Fix / Troubleshooting
Safety first: Turn off power at the GFCI breaker before attempting to clear a dry condition.
- Resolve flow issues first: Follow the same steps as for DR: verify water level, clean/remove filter, open valves, and bleed air from pump and heater unions.
- Inspect heater tube: Check the stainless heater tube for signs of discoloration or scorching, which indicate past dry-fire events.
- Reset lockout: After correcting flow, leave power off for at least 5 minutes, then restore power to allow the control to reset the DY lockout.
- Monitor operation: Watch the spa through a full heating cycle to ensure the DY code does not return.
- If DY persists: The heater element or control board may have been damaged by repeated dry-fire and may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Arctic Spas heater assembly
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