dY
Sunrise Spas
Dry Heater Lockout
Display shows dY or DY after dr error, spa locked out
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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 heater condition, Overheated heater tube, Failed heater element after dry fire, Faulty temperature or high-limit sensor
How to Fix / Troubleshooting
Safety first: Leave power off at the GFCI until the heater has cooled completely.
- Resolve root cause: Follow the steps for the dr error to ensure the heater is fully flooded with water and that circulation is normal.
- Inspect heater tube: With power off and panels removed, visually inspect the Sunrise Spas stainless heater tube for discoloration, warping, or burnt smell, which indicate dry-fire damage.
- Reset control pack: After cooling and restoring flow, turn power back on. If dY reappears immediately, the heater element or sensors may be damaged.
- Do not repeatedly reset: Repeated resets without fixing the cause can create a fire hazard. Schedule professional service to test heater resistance and sensor values.
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Repair Difficulty
Professional Required
5/5
Required Part
Heater Element
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